US3490461A - Cigarette ventilation - Google Patents

Cigarette ventilation Download PDF

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Publication number
US3490461A
US3490461A US632336A US3490461DA US3490461A US 3490461 A US3490461 A US 3490461A US 632336 A US632336 A US 632336A US 3490461D A US3490461D A US 3490461DA US 3490461 A US3490461 A US 3490461A
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United States
Prior art keywords
mouthpiece
smoke
cigarette
filter
tobacco
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US632336A
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English (en)
Inventor
Jerome S Osmalov
Arthur R Pasquine
Robert B Seligman
Andrew C Britton
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Philip Morris USA Inc
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Philip Morris USA Inc
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • ABSTRACT F THE DISCLOSURE A cigarette in which the smoke drawn from the tobacco section is delivered to the smokers mouth through a central passage in a mouthpiece arranged in alignment with the tobacco section and in fluid communication therewith, the mouthpiece being provided with one or more ventilation passages through which Ventilating streams of air are drawn during smoking, the ventilation passages being segregated from the central passage in a manner which prevents commingling of the smoke stream and Ventilating streams prior to the delivery of each to the smokers mouth.
  • the tobacco cylinder wrapper can be a Very porous paper which allows for aspiration of air therethrough and into the tobacco cylinder where it commingles with the smoke stream or, the tobacco cylinder wrapper may be perforated at locations along the length thereof which provides radial access ports to the tobacco cylinder through which Venti lating air streams enter the cigarette. It is also known to perforate the filter section Wrapper of a filter cigarette or otherwise provide it with ports communicating With the filter medium to admit the Ventilating air streams directly to the filter section rather than to the tobacco cylinder.
  • Ventilating means are effective to produce significant dilution of the smoke stream but provide that such dilution first occurs within the cigarette and not in the smokers mouth. Also, when these means are employed with filter cigarettes, they each suffer from a common shortcoming in that not only the smoke stream, but the Ventilating air streams are directed through at least a portion of the filter section. Thus the filter medium which is intended to remove smoke components from the smoke stream is not used to full advantage because the Ventilating air streams tend to transit the filter section adjacent the point of entry of the air streams thereto and channel along defined paths in the filter medium to the exclusion of the smoke stream.
  • the present invention achieves the foregoing desirable ends with a mouthpiece suited for use with both filter type and non-filter type cigarette and which allows delivery of the smoke stream to the smokers mouth through a central passage in the mouthpiece while concurrently, Ventilating air streams are introduced into the cigarette in flow paths completely segregated from the smoke stream.
  • a mouthpiece suited for use with both filter type and non-filter type cigarette and which allows delivery of the smoke stream to the smokers mouth through a central passage in the mouthpiece while concurrently, Ventilating air streams are introduced into the cigarette in flow paths completely segregated from the smoke stream.
  • a filter cigarette only smoke transits the filter section and the smoke stream is first commingled with the Ventilating air streams only upon delivery of each to the smokers mouth.
  • each ventilation passage communicate directly with the smokers mouth so that the Ventilating air stream and smoke stream are each delivered separately to the mouth, the ventilation passages also being provided with inlets in communication with the atmosphere.
  • the ventilation passages may be provided in a number of Ways.
  • the mouthpiece can be formed with longitudinal grooves in the outer periphery thereof, the grooves having a suitable shape such as being arcuate in section.
  • a wrapper sheet can be employed to enclose the mouthpiece and connect it with the filter section, or with the filter and tobacco sections. Each groove thus provides a Ventilation passage.
  • the inlet to the respective grooves can be provided by perforating the wrapper sheet to establish communication to the atmosphere, or the mouthpiece can be made slightly larger than the filter section to allow insertion of the latter at least partly within the mouthpiece in which case the inlet ends of the passages communicate directly with atmosphere. It is also possible to form the ventilation passages in the structure of the mouthpiece intermediate the inner and outer surfaces thereof.
  • the ventilation passages are constituted by a series of longitudinal conduits in the body each having a radially directed inlet port which communicates with the atmosphere.
  • the mouthpiece can be connected with the tobacco cylinder with a wrapper sheet, or the mouthpiece can be made larger than the tobacco cylinder, and the later inserted partly therein.
  • the mouthpiece can be provided with internal ribs extending the full length thereof and serving to strengthen the mouthpiece structure as well as giving it an attractive appearance.
  • the ribs will function to sub-divide the smoke passage into two or more separate smoking passages.
  • the mouthpiece can be formed from various materials including thermoplastics, corrugated paper and metal foil.
  • a further feature of the construction of the mouthpiece is that cigarette flavoring substances such as menthol can be incorporated in one or more of the ventilation passages and smoke treating substances can be incorporated in the smoke passage.
  • FIGURE 1 is a longitudinal sectional vie'w of a ventilated cigarette made according to the present invention, the thickness dimensions being exaggerated for purposes of clarity.
  • FIGURE 1a is an end view of the cigarette shown in FIGURE 1 as viewed from the left side thereof.
  • FIGURE 2 is a view similar to FIGURE 1 showing a modification wherein the filter section of the cigarette extends within the mouthpiece.
  • FIGURE 3 is a view similar to FIGURE 2 except that it illustrates a non-filler type cigarette which is ventilated according to the teaching of the present invention.
  • FIGURE 4 is a view similar to FIGURE 2 except it shows a filter cigarette wherein both the filter medium and tobacco cylinder extend within the full length of the mouthpiece.
  • FIGURE 5 is a view similar to FIGURES 1 and 2 of a further modified form of the cigarette wherein the ventilation passages in the mouthpiece are formed radially inwardly a distance from the mouthpiece outer surface.
  • FIGURE 6 is a perspective view of a mouthpiece which can be used with the cigarettes illustrated in FIGURES 1 and 2.
  • FIGURE 7 is a transverse sectional view on enlarged scale of a mouthpiece of the type illustrated in FIGURE 5 showing an additional modification thereto in the form of a central supporting rib.
  • FIGURE 8 is a fragmentary perspective view of a mouthpiece which is formed from either corrugated paper or a foil of a metal.
  • FIGURE 9 is a perspective view of a further embodiment of mouthpiece in which the ventilation passages are formed so as to follow a spiral course.
  • the cigarette of the present invention embodies means with which separate Ventilating air streams can be delivered to the smokers mouth concurrently with the smoke stream at which point the first commingling of the respective streams occurs.
  • the cooling, diluting air streams are delivered through the agency of a mouthpiece representative constructional forms of which -will be described shortly.
  • the present invention provides that the mouthpiece can -be used in conjunction with a filter cigarette or with a cylinder of tobacco alone to make use of the positive effects of cigarette ventilation.
  • ventilation involves introducing air into the smoke stream ultimately delivered to the smokers mouth.
  • the air serves, inter alia, as a coolant and also as a diluent for diluting the smoke thereby diminishing the smoke components present in the delivered smoke.
  • the reduction of particulate matter and gas phase in the smoke which is delivered to the mouth is derived from better filtration (in tilter types) of the smoke actually puffed and also because a lesser volume of smoke is actually puffed although the total volume puffed by the smoker is substantially the same as that he would puff, if ventilation Was not employed.
  • the Ventilating fresh air stream volume will reduce the smoke stream volume accordingly. In this manner, less actual smoke is delivered to the smokers mouth and hence less smoke solids. As those skilled in the art will perceive upon reading the present description, a lesser smoke draw during puffing will be accompanied by a decrease in smoke stream velocity, providing for a longer dwell of the smoke in the cigarette filter unit with consequent promotion of the effectiveness of smoke filtration.
  • the filter type cigarette 10 illustrated in FIGURE l it includes a tobacco section 12 comprised of a cylinder of tobacco 14 and a paper wrap-per 15 therefor.
  • a filter section 16 Aligned with the tobacco cylinder 14 is a filter section 16 which comprises a suitable filter medium in contactwith an end of the tobacco cylinder.
  • the filter medium may be of various substances, as 'for example, a tow of cellulose acetate, a composite structure including a fiber and a granular filtrant such as charcoal, or any other form of filter medium suited for the intended purposes.
  • the filter section is formed as a cylindrical body having substantially the same diameter as the tobacco cylinder.
  • Mouthpiece 18 is conveniently formed as a generally cylindrical body with the Wall thickness thereof being kept at a minimum in order to reduce the area thereof which confronts the end of the filter medium and thereby lessen the area of the filter medium which can not be used for filtration purposes.
  • the outer surface of the mouthpiece 18 is formed in such manner that it will provide structure defining one or more ventilation passages in the mouthpiece. Thus it may be formed with one or more longitudinal grooves 22 as best seen in FIGURES 1a and 6.
  • the grooves 22 may have the arcuate shape shown in which case the mouthpiece will have a fiuted appearance.
  • the number and dimensions of the grooves 22 may be varied depending on the measure of ventilation desired.
  • the surface configuration of the mouthpiece may include grooves, channels, embossed structure or other surface formations which are suited to produce one or more unobstructed paths along which streams of Ventilating air can flow in transit to the smokers mouth, the essential requirement being that the Ventilating air stream paths be segregated from the smoke stream flow path constituted by inner passage 20.
  • Mouthpiece 18 is preferably formed so that its outside diameter is substantially equal to that of the filter section facilitating its joindery to the filter section by means of a Wrapper sheet 24, the latter being commonly referred to in the art as a combining wrap.
  • the wrapper sheet 24 encloses the outer surface of the mouthpiece and bears tightly against the peaks 17 formed ⁇ by the intersecting surfaces of adjacent grooves 22 effectively making each groove 22 a separate ventilation passage which is segregated from each of the others and from inner passage 20, this feature being more readily apparent by reference to FIGURE 1a.
  • the Wrapper sheet 24 preferably is a porous paper which allows air to pass therethrough, preferably being one having a Greiner porosity of between 0.0 and 0.1.
  • An outer wrapper 26 overlies the wrapper sheet 24 and is provided for the purpose of joining together the assembly of the mouthpiece, filter section and tobacco section.
  • the outer wrapper 26 which is a type commonly referred to in the tobacco art as tipping paper, is impervious to air flow but since ventilating air must be delivered through the mouthpiece ventilation passages, the outer wrapper 26 is provided with perforated openings 28 in the regions thereof adjacent the inlet ends of the ventilation passages.
  • the perforated openings 28 may be arranged as one or more circles of openings extending around the mouthpiece. It is in this manner, that the ventilation passages are placed in communication with the atmosphere.
  • wrapper sheet 24 also could be a type of paper that is substantially impervious to the passage of air therethrough. In this case, the wrapper sheet would also be provided with perforated openings similar to openings 28.
  • FIGURE 1 The ow patterns of the smoke stream and Ventilating air streams may be noted in FIGURE 1.
  • the smoke stream which is depicted by a single heavy line, is drawn from the tobacco section 12, through filter section 14 and unimpededly through the inner passage 20 of the mouthpiece being delivered directly to the smokers mouth on exiting from passage 20.
  • the ventilating air is drawn from the atmosphere through openings 28 in the outer wrapper 26, through the porous wrapper sheet 24 and into the inlet ends of each ventilation passage.
  • the ventilation passages comprised by the grooves have outlets coincident with the plane in which lies the outlet end of inner passage 21 so that the Ventilating air streams exit from the mouthpiece within the smokers mouth not having theretofore commingled with the smoke stream.
  • the Ventilating air streams can enter the mouthpiece ventilation passages only through openings 28 as the outer wrapper 2-6 is air impervious and no outside air aspiration to the filter section 16 is possible.
  • the intake of air to the ventilation passages by way of openings 28 may in some instances, depending on the level of dilution involved, flow velocity of the Ventilating air and other factors, tend to set up a venturi effect at the inlet ends of the ventilation passages promoting the intake of air to the Ventilation passages from the iilter section.
  • This can be obviated by printing a thin coating of a smoke impervious material on the rear face of the ⁇ filter medium as at 31.
  • the perforated openings 28 in the outer wrapper 26 can be formed therein various ways, One convenient method of effecting this is to needle-pierce the outer wrapper to form the openings therein before it is wrap- -ped on the cigarette.
  • the number and size of the openings in the outer wrap can be varied depending upon the level of dilution to be provided. In general, the dilution range may vary between 0% and 80% Ventilating air in each puff, the actual dilution employed being determined by factors such as end point of acceptable taste, cigarette resistance to draw, etc.
  • openings 28 will not be provided in the outer wrapper for each corresponding passage but only for as many as are associated with the particular dilution level.
  • the outer wrapper is not necessary on the form of cigarette shown in FIGURE 2.
  • This cigarette 40 has a tobacco section 42, filter section 44 and a mouthpiece 46 similar to that already described in that the latter has a central or inner smoke passage 48 and a group of longitudinal grooves 50 formed circularly spaced around the outer surface of the mouthpiece.
  • the latter grooves could for example comprise six in number and be arranged at a spacing of 60 intervals.
  • the mouthpiece is provided with an inside diameter just slightly larger than the outside diameter of filter section 44 thereby allowing the lilter section to extend into the mouthpiece in the manner shown.
  • the tobacco cylinder 42 is joined to the filter section with a paper combining wrap 43.
  • the full cross sectional area of the filter unit is available for filtration and the recessed location of the lter medium lessens the likelihood of the smoker contacting same with his tongue.
  • a further important advantage of this construction is that the ventilating air transits the full length of the filter medium and contributes to a cooling of the lilter with consequent improved smoke condensation in the latter.
  • a wrapper sheet 52 encloses the outer surface of the mouthpiece and it can Ibe an air impervious type since the inlets to the respective ventilation passages constituted by grooves 50 are open to the atmosphere directly as at 54.
  • the smoke stream and Ventilating air streams iiow paths are shown in solid heavy and dashed lines respectively.
  • the cigarette shown in FIGURE 4 is the same as that shown in FIGURE 2 except that the lilter section 101 therein extends fully within the mouthpiece 102, the rearmost end of each being aligned as at 103. Also, the mouthpiece extends over a portion of the tobacco section 104 as at 105. As with the cigarette of FIGURE 2, the cigarette 100 can include a combining wrap 107 for joining the tobacco cylinder with the filter medium. Cooling of the filter medium 101 by the Ventilating air occurs in the same manner and with the advantages described for cigarette 40.
  • the mouthpiece structure used in the cigarette embodiments of FIGURES 1 and 2 may be made from a Variety of materials and formed in a number of ways.
  • the mouthpiece 18 shown in FIGURE 6 is made by extruding a tubular body of thermoplastic material of continuous length and then sectioning same to provide individual mouthpieces.
  • Suitable mouthpiece materials can include thermosetting resins such as phenolics.
  • Foamed polyurethane also could be used provided an air impervious lm was applied to the external surfaces thereof, or the mouthpiece could be made from an extruded bonded fiber.
  • the dimensions of the mouthpiece can of course be varied with respect to length. For example, mouthpieces with lengths between l0 and 30 mm. or more and a circumference of 25 mm.
  • the mouthpiece from paper or a foil of a metal such as aluminum provided same is sufficiently rigid to be shaped into and retain the structural form of the mouthpiece.
  • a sheet of corrugated paper or metal foil can ybe rolled to form a tubular fiuted structure 60 such as that shown in FIGURE 8, the respective longitudinal margins being connected together in abuttment or overlapped relation to form a seam as at 61, the rolled sheet thereafter being cut into individual mouthpiece lengths.
  • the mouthpiece shown in FIG- URE 9 is formed as a generally cylindrical body.
  • the ventilation passages 131 therein are formed to transit a spiral course in the direction of the major axis of the mouthpiece.
  • This mouthpiece is intended to be used wherein the filter section extends within the mouthpiece and advantage can be taken of the longer passage of air along the passages 131 to cool the filter medium and thereby derive the benefits already mentioned in the description of the cigarettes of FIG- URES 2 and 4.
  • the mouthpiece structure of the present invention not only serves as the means by which separate smoke stream and Ventilating air streams delivery can be made to the smokers mouth, but it provides a convenient means of incorporating flavoring substances in the cigarettes.
  • particles 58 of a menthol, sprayed on film of anetholey or other suitable tobacco ilavoring substance can be disposed in the ventilation passages.
  • impregnate the mouthpiece with a solution of the flavoring substance if the mouthpiece material is of a character which lends itself to that end, as for example, the paper mouthpiece of FIGURE 8.
  • FIGURE 5 Another form of mouthpiece is used in the cigarette 70 shown in FIGURE 5.
  • the cigarette 70 is very similar 7 to the cigarette of FIGURE 1 except the mouthpiece 72 itself is of somewhat different construction.
  • Mouthpiece 72 is of generally cylindrical shape having a central smoke passage 74.
  • the ventilation passages however, are not formed at the outer surface of the mouthpiece. Instead, they are formed as a circle of longitudinal conduits 76 in the structure of the mouthpiece intermediate its inner and outer surfaces.
  • the conduits 76 can extend end to end of the mouthpiece body with each conduit having an inlet port 78 extending radially outwardly to the outer surface of the mouthpiece.
  • a porous wrapper sheet 80 and an outer wrapper 82 can be provided with the outer wrapper 82 having perforated openings I84 therein associated with each Ventilating passage for the purpose of placing the inlet of the Ventilating passage in communication with the atmosphere.
  • the smoke stream and ventilating air stream ilow paths having been illustrated for cigarette 70 in the same manner as previously described.
  • FIGURE 7 shows a modification to the mouthpiece 72 of cigarette 70.
  • the modification provides for including a stiffening rib 90 in the mouthpiece structure.
  • the rib 90 preferably is formed integral with the structure as shown and extends end to end thereof.
  • the rib effectively sub-divides the central smoke passage into two separate smoke passages 92, 94. While the confrontation of the rib with the iilter media serves to reduce the area of the latter which is available for filtration, the rib nevertheless serves to rigidize the mouthpiece structure Where the shell thickness of the latter is very small.
  • the rib also serves as a decorative function and is not limited to being a single rib. For example, the rib could be of cruciform section.
  • Ventilated cigarette of the present invention A number of important advantages result from the Ventilated cigarette of the present invention, the obvious prime advantage being that dilution of the smoke thereof with Ventilating air streams reduces the tobacco solids and smoke organic gas phase delivered to the smokers mouth and this whether the cigarette be a iilter type or non-ilter type.
  • the reduction of particulate matter delivery is further enhanced by the better liltration possible with dilution by reason of a longer dwell of the smoke within the -ilter medium as will appear from the example to be given below.
  • An unexpected advantage to the smoker is the provision of increased smoke iiavor and taste possible with the cigarette of this invention.
  • a further advantage of the cigarette of the present invention lies in the fact that the Ventilating air stream passage and smoke stream passage are segregated from each other and lacking communication with each other it is impossible for backup of Smoke to occur through the Ventilation inlets. Thus the smoker experiences no staining or odorizing of his ngers from smoke as can occur with other types of ventilated cigarettes wherein the smoke passage communicates with the ventilation passage.
  • FIG- URE 1 A number of cigarettes of the construction shown in FIG- URE 1 were made.
  • the tobacco cylinders were sized to be 63 mm. long and the tobacco cylinders alone had an average resistance-to-draw (RTD) of 2.0 in. of water.
  • the iilter sections were made 10 mm. long and were comprised of cellulose acetate, the filters having on an average, a RTD of 2.8 in. of water.
  • a number of mouthpieces as shown in FIGURE 6 of l5 mm. length were formed with 24 grooves therein, each groove being about 0.040 in. wide and 0.011 in.
  • the total RTD of the cigarettes measured prior to smoking was an average of 2.3 in. of water.
  • the cigarettes prior to smoking had an average total RTD of 2.7 in.
  • the tipping paper used for both types of cigarettes was provided with 48 holes approximately 0.030 sq. mm. in area.
  • TPM total particulate matter
  • OGP organic gas phase
  • FIGURE 3 depicts a cigarette which has a tobacco section 121 extending partly into a mouthpiece 1,22 of the construction shown in FIGURE 6, the mouthpiece being enclosed with a non-porous wrapper sheet 123 which is employed to join the tobacco section to the mouthpiece.
  • the tipping paper was perforated with two circular rows of openings adjacent the inlet of the respective Ventilating passages.
  • Control cigarettes comprising each a 85 mm. length tobacco cylinder joined to a 15 mm. length paper mouthpiece without ventilating passages were provided. The cigarettes were then smoled and the following representative parameters were note Ventilated N ori-ventilated cigarette cigarette Dilution (average), percent 64 0 Cigt. RTD, in. H2O 1. 2 3.3 TPM, mg./cgt. to 30 mm. butt length 19. 0 45. 0
  • the smoke passage also provides a convenient place for incorporating smoke treating substances such as charcoal which is used to reduce the smoke OGP. In the latter instance, the charcoal could be fused t the surfaces of passage 124. It is also possible to utilize the smoke passage 124 as the place where both a ilavorant and tobacco-treating materialcan be incorporated in the cigarette. For example, a charcoal serving as a avor transfer agent for a avorant such as menthol contained in the charcoal could be disposed in the passage 124.
  • the ventilated cigarette of the present invention offers important advantages. It is known that a reduction in smoke ow through a iilter media is accompanied by 'an increase in the efficiency of particulate ltration of the media.
  • the introduction of Ventilating air streams as provided by the present invention produces such a reduction in smoke ow and does it without having the fresh air invest the filter media which action would otherwise reduce the available area of the media filtering the smoke.
  • the full area of the media serves to filter the smoke and it does so under conditions of reduced smoke ow with consequent greater overall removal of smoke particulates.
  • a lilter cigarette including a tobacco section comprised of tobacco enclosed with a paper wrapper
  • said mouthpiece connected with said filter element and embodying ventilation passages through which dilution air is drawn directly from the atmosphere to the smokers mouth without admixture of the same with smoke drawn from the tobacco section through said lter element when the cigarette is puffed, the improvement of said mouthpiece comprising a thin-walled tubular body of extruded thermoplastic material having a central passage of circular section through which the smoke drawn during puing passes, said body having a plurality of grooves formed in the outer surface thereof and extending longitudinally of said body, said grooves being circularly spaced around said body, said body being joined to said filter element with a wrapping of porous paper,
  • each groove being spaced from adjacent grooves by an intervening portion of the outer surface of said body which is engaged tightly by said porous paper thereby to isolate each groove from the grooves adjacent thereto,
  • said lter element and said mouthpiece being joined with said tobacco cylinder by a wrapping of tipping paper overlaying said porous wrapping, said tipping paper having a circle of perforations therein communicating at least some of said grooves with atmosphere.
  • said grooves are uniformly circularly spaced around said body and are of arcuate section shape, the intervening portion of the outer surface of said body between Vadjacent grooves being in the form of peaks formed in said body outer surface by the intersection of the arcuate surfaces of adjacent grooves, said porous paper tightly engaging said peaks.
  • a lter cigarette including a tobacco section comprised of tobacco enclosed with a paper wrapper
  • a lter element at one end of said tobacco section, and a ventilation mouthpiece connected with said filter element and embodying ventilation passages through which dilution air is drawn directly from the atmosphere to the smokers mouth Without admixture of the same with smoke drawn from the tobacco section through said iilter element when the cigarette is puffed, the improvement of said mouthpiece comprising a thin-Walled tubular body of thermoplastic material having a central passage through which the smoke drawn during puffing passes, said body having a plurality of passages formed in the outer surface thereof and extending longitudinally of said body, and being joined to said lter element with a porous wrapping paper pervious to air passage therethrough,
  • said lter element and said mouthpiece being joined with said tobacco cylinder by a wrapping of tipping paper overlaying said porous wrapping, said tipping paper having a circle of perforations therein communicating at least some of said passages through said porous wrapping with atmosphere.
  • passages comprise grooves uniformly circularly spaced around said body, the intervening portion of the outer surface of said body between adjacent grooves being in the form of peaks formed in said body outer surface by the intersection of the adjacent grooves, said porous paper tightly engaging said peaks.
US632336A 1967-04-20 1967-04-20 Cigarette ventilation Expired - Lifetime US3490461A (en)

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US63233667A 1967-04-20 1967-04-20

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US (1) US3490461A (no)
JP (1) JPS543960B1 (no)
AT (1) AT290364B (no)
BE (1) BE712128A (no)
CH (1) CH470145A (no)
DE (1) DE1657261B1 (no)
FI (1) FI46906C (no)
FR (1) FR1559906A (no)
GB (1) GB1198772A (no)
LU (1) LU55744A1 (no)
NL (1) NL152748B (no)
NO (1) NO126293B (no)
SE (1) SE341780B (no)

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596663A (en) * 1969-05-29 1971-08-03 Lorillard Co P Ventilated smoking article
US3608561A (en) * 1970-01-15 1971-09-28 H 2 0 Filter Corp The Extender means for attachment of an auxiliary cigarette filter
US3769148A (en) * 1970-10-12 1973-10-30 Ici Ltd Fibrous sheet materials and filter elements formed therefrom
US3789855A (en) * 1971-06-22 1974-02-05 Liggett & Myers Inc High flavor impact, low smoke yield cigarette mouthpiece
US3855032A (en) * 1971-03-12 1974-12-17 Brown & Williamson Tobacco Production of tobacco-smoke filters
US3860011A (en) * 1973-08-27 1975-01-14 Liggett & Myers Inc Hollow filter
US4023576A (en) * 1973-11-21 1977-05-17 Liggett & Myers Incorporated Cigarette mouthpiece for controlling flow
JPS5375396A (en) * 1976-12-15 1978-07-04 Cigarette Components Ltd Cigarette smoke filter
DE3011959A1 (de) * 1979-04-11 1980-10-23 Brown & Williamson Tobacco Zigarettenfilter
FR2494967A1 (fr) * 1980-11-28 1982-06-04 Brown & Williamson Tobacco Filtre a cigarette
FR2496415A1 (fr) * 1980-12-22 1982-06-25 Brown & Williamson Tobacco Filtre a cigarette
DE3147531A1 (de) * 1980-12-01 1982-07-08 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
US4338956A (en) * 1980-12-05 1982-07-13 Brown & Williamson Tobacco Corporation Cigarette filter
EP0059040A1 (en) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Smoking article with secondary air channels and apparatus for producing the same
EP0061275A1 (en) * 1981-03-17 1982-09-29 American Brands, Inc. Tobacco product
US4362171A (en) * 1980-11-21 1982-12-07 Brown & Williamson Tobacco Corporation Cigarette filter
US4365641A (en) * 1979-04-11 1982-12-28 Brown & Williamson Tobacco Corporation Cigarette filter
FR2513094A1 (fr) * 1981-09-21 1983-03-25 Brown & Williamson Tobacco Filtre de cigarette
US4380241A (en) * 1980-05-01 1983-04-19 British-American Tobacco Company Limited Smoking articles
EP0083197A1 (en) * 1981-12-23 1983-07-06 Imperial Group Plc A tipping assembly for an elongate smoking article
DE3304764A1 (de) * 1982-02-16 1983-08-25 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
US4406294A (en) * 1982-02-16 1983-09-27 Brown & Williamson Tobacco Corporation Cigarette filter
EP0093478A2 (en) * 1982-05-03 1983-11-09 Turmac Tobacco Company B.V. Filter cigarette
US4480649A (en) * 1981-07-06 1984-11-06 Hayes Ernest B Filter device
US4481959A (en) * 1981-07-06 1984-11-13 American Filtrona Corporation, 8401 Filtering means
US4492240A (en) * 1981-07-06 1985-01-08 Hayes Ernest B Smoke filter
US4492238A (en) * 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
DE3400004A1 (de) * 1984-01-02 1985-07-18 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Ventilationselement fuer einen rauchbaren artikel
US4542754A (en) * 1983-12-05 1985-09-24 Brown & Williamson Tobacco Corporation Filtered cigarette
US4553556A (en) * 1984-03-22 1985-11-19 Philip Morris Incorporated Cigarette having a corrugated wrapper
DE3522562A1 (de) * 1984-06-25 1986-01-02 Brown & Williamson Tobacco Corp., Louisville, Ky. Filter fuer eine zigarette
US4574821A (en) * 1984-03-22 1986-03-11 Philip Morris Incorporated Expanded wrapper and smoking articles including same
US4582071A (en) * 1980-12-22 1986-04-15 Imperial Group Limited Tipping assembly for an elongate smoking article
US4583560A (en) * 1982-07-07 1986-04-22 Mitsubishi Acetate Co., Ltd Tobacco smoke filter
US4608999A (en) * 1980-12-01 1986-09-02 Brown & Williamson Tobacco Corporation Cigarette filter
US4646762A (en) * 1983-12-05 1987-03-03 Brown & Williamson Tobacco Corporation Cigarette having a mouthpiece
US4646763A (en) * 1985-11-19 1987-03-03 Philip Morris Incorporated Adjustable filter cigarette
US4700725A (en) * 1986-04-17 1987-10-20 Philip Morris Incorporated Adjustable filter cigarette
DE3715257A1 (de) * 1986-05-09 1987-11-12 American Tobacco Co Verfahren zum herstellen einer ganztabakzigarette mit kontrolle der teerabgabe und ganztabakzigarette
EP0306186A1 (en) * 1987-08-26 1989-03-08 Philip Morris Products Inc. Hinged filter sleeve
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
AT392876B (de) * 1984-11-09 1991-06-25 Brown & Williamson Tobacco Verfahren und vorrichtung zur herstellung eines tabakrauchfilters sowie einer filterzigarette
EP0476969A1 (en) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Filter cigarette
DE3311902C3 (de) * 1982-04-05 2002-07-11 Filtrona Ltd Filtermundstück für Zigaretten
US20030211436A1 (en) * 2002-05-07 2003-11-13 Gregory Desmond Candlestick
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US20080251091A1 (en) * 2004-10-06 2008-10-16 Rhodia Acetow Gmbh Tobacco Smoking Filter or Filter Element with a Content of Adjuncts
US20080314401A1 (en) * 2005-12-15 2008-12-25 Gallaher Limited Smoking Article
US8205621B1 (en) 2011-01-27 2012-06-26 Wayne Seeley Smoking device for aiding cessation of smoking
CN103648310A (zh) * 2011-07-20 2014-03-19 英美烟草(投资)有限公司 通气的吸烟物品
RU2562035C2 (ru) * 2009-11-12 2015-09-10 Филтрона Филтер Продактс Девелопмент Ко. Пти, Лтд Фильтр для табачного дыма
IT201600075162A1 (it) * 2016-07-18 2018-01-18 Montrade S P A Bacchetta filtro per articoli da fumo, metodo per la sua fabbricazione e filtro ottenuto a partire da tale bacchetta filtro
CN110140999A (zh) * 2019-04-30 2019-08-20 上海新型烟草制品研究院有限公司 一种气雾产生制品
CN112006328A (zh) * 2019-05-13 2020-12-01 湖北中烟工业有限责任公司 烟草制品的过滤部件以及烟草制品
US20210145054A1 (en) * 2013-03-15 2021-05-20 Altria Client Services Llc Electronic smoking article
US11076637B2 (en) 2019-08-06 2021-08-03 Weedgets Inc. Compact pipe for smoking cannabis
US20230130063A1 (en) * 2021-10-26 2023-04-27 Good Tree International, Inc. Filter having a shaped rim structure and a flavor capsule
US11700879B2 (en) 2021-02-26 2023-07-18 Good Tree International, Inc. Smoking accessory with filter and filter having a flavor capsule
US11744281B2 (en) 2021-03-24 2023-09-05 Good Tree International, Inc. Hollow conical member with flavor capsule
US11785981B2 (en) 2020-01-17 2023-10-17 Good Tree International, Inc. Hollow leaf tube with flavor capsule
WO2023198758A1 (en) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Aerosol-generating article comprising a ventilation zone downstream of a downstream filter segment
US11910821B2 (en) 2021-03-24 2024-02-27 Good Tree International, Inc. Filters and elongated members formed of palm paper and having a flavor capsule
US11969008B2 (en) 2021-03-24 2024-04-30 Good Tree International, Inc. Filters and elongated members formed of palm paper and having a flavor capsule

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508084A (en) * 1976-03-17 1978-04-19 British American Tobacco Co Tobacco-smoke filters
AU4119078A (en) * 1977-11-18 1980-05-08 Philip Morris Inc Filter system
DE3048905A1 (de) * 1980-12-23 1982-07-22 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Filter fuer cigaretten
DE3250135C2 (de) * 1981-01-15 2000-09-28 Cigarette Components Ltd Zigarettenfilterstab
IE53192B1 (en) * 1981-07-06 1988-08-17 Cigarette Components Ltd Cigarette filter
IL66401A (en) * 1981-08-03 1985-07-31 Brown & Williamson Tobacco Filter cigarette
GB2118424B (en) * 1982-04-07 1986-07-16 Filtrona Ltd Tobacco smoke filter
GB2133269B (en) * 1982-12-13 1986-08-20 Filtrona Ltd Tobacco smoke filter
US4540005A (en) * 1983-12-05 1985-09-10 Brown & Williamson Tobacco Corporation Cigarette having a mouthpiece
DE3345001C2 (de) * 1983-12-13 1986-06-12 H.F. & Ph.F. Reemtsma Gmbh & Co, 2000 Hamburg Zigarette mit ventiliertem Hohlmundstück
DE3345000C2 (de) * 1983-12-13 1985-10-31 H.F. & Ph.F. Reemtsma Gmbh & Co, 2000 Hamburg Ventilierte Filterzigarette mit Rillenfilter
DE3403281C2 (de) * 1984-01-31 1994-11-17 Bat Cigarettenfab Gmbh Filter
DE3624661A1 (de) * 1986-07-22 1988-02-04 Rhodia Ag Ventilierte zigarette
GB8709173D0 (en) * 1987-04-16 1987-05-20 Cigarette Components Ltd Ventilated cigarette filter
GB0821803D0 (en) * 2008-12-01 2009-01-07 British American Tobacco Co Smoking article filter
JP2011072296A (ja) * 2009-10-02 2011-04-14 British American Tobacco Japan Kk 添加剤を含むフィルター
JP5577004B2 (ja) * 2013-02-19 2014-08-20 和人 輿石 タバコ用フィルター
CN103431518B (zh) * 2013-09-05 2015-07-08 上海华宝生物科技有限公司 一种一次注塑成型烟气过滤装置
GB2528243A (en) * 2014-06-30 2016-01-20 British American Tobacco Co Mouthpiece
WO2020220507A1 (zh) * 2019-04-29 2020-11-05 云南中烟工业有限责任公司 一种低截留加热不燃烧卷烟烟支

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1718122A (en) * 1927-01-18 1929-06-18 Shon Clarence L De Cigarette tip
FR1034663A (no) * 1949-12-06 1958-07-29 Elie P Aghnides
CA668052A (en) * 1963-08-06 Olin Mathieson Chemical Corporation Cigarette
FR1349992A (fr) * 1962-11-29 1964-01-24 Cigarette autorefroidissante
US3323525A (en) * 1964-07-14 1967-06-06 Achilles Corp Cigarette holder
US3324862A (en) * 1964-08-31 1967-06-13 Simone Bessie De Smoking device
US3390684A (en) * 1965-08-09 1968-07-02 Armstead B. Hudnell Cigarette with controllable mildness
US3410275A (en) * 1965-03-30 1968-11-12 Irwin W. Tucker Cigarette filter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864247A (en) * 1958-04-16 1961-03-29 Olin Mathieson Improvements in or relating to cigarettes
US3240213A (en) * 1962-01-25 1966-03-15 Achilles Corp Cigarette

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA668052A (en) * 1963-08-06 Olin Mathieson Chemical Corporation Cigarette
US1718122A (en) * 1927-01-18 1929-06-18 Shon Clarence L De Cigarette tip
FR1034663A (no) * 1949-12-06 1958-07-29 Elie P Aghnides
FR1349992A (fr) * 1962-11-29 1964-01-24 Cigarette autorefroidissante
US3323525A (en) * 1964-07-14 1967-06-06 Achilles Corp Cigarette holder
US3324862A (en) * 1964-08-31 1967-06-13 Simone Bessie De Smoking device
US3410275A (en) * 1965-03-30 1968-11-12 Irwin W. Tucker Cigarette filter
US3390684A (en) * 1965-08-09 1968-07-02 Armstead B. Hudnell Cigarette with controllable mildness

Cited By (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596663A (en) * 1969-05-29 1971-08-03 Lorillard Co P Ventilated smoking article
US3608561A (en) * 1970-01-15 1971-09-28 H 2 0 Filter Corp The Extender means for attachment of an auxiliary cigarette filter
US3769148A (en) * 1970-10-12 1973-10-30 Ici Ltd Fibrous sheet materials and filter elements formed therefrom
US3855032A (en) * 1971-03-12 1974-12-17 Brown & Williamson Tobacco Production of tobacco-smoke filters
US3789855A (en) * 1971-06-22 1974-02-05 Liggett & Myers Inc High flavor impact, low smoke yield cigarette mouthpiece
US3860011A (en) * 1973-08-27 1975-01-14 Liggett & Myers Inc Hollow filter
US4023576A (en) * 1973-11-21 1977-05-17 Liggett & Myers Incorporated Cigarette mouthpiece for controlling flow
JPS5375396A (en) * 1976-12-15 1978-07-04 Cigarette Components Ltd Cigarette smoke filter
JPS5631948B2 (no) * 1976-12-15 1981-07-24
US4365641A (en) * 1979-04-11 1982-12-28 Brown & Williamson Tobacco Corporation Cigarette filter
DE3011959A1 (de) * 1979-04-11 1980-10-23 Brown & Williamson Tobacco Zigarettenfilter
US4380241A (en) * 1980-05-01 1983-04-19 British-American Tobacco Company Limited Smoking articles
US4362171A (en) * 1980-11-21 1982-12-07 Brown & Williamson Tobacco Corporation Cigarette filter
FR2494967A1 (fr) * 1980-11-28 1982-06-04 Brown & Williamson Tobacco Filtre a cigarette
US4343319A (en) * 1980-11-28 1982-08-10 Brown & Williamson Tobacco Corporation Cigarette filter
US4362172A (en) * 1980-12-01 1982-12-07 Brown & Williamson Tobacco Corporation Cigarette filter
DE3147531A1 (de) * 1980-12-01 1982-07-08 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
US4608999A (en) * 1980-12-01 1986-09-02 Brown & Williamson Tobacco Corporation Cigarette filter
US4338956A (en) * 1980-12-05 1982-07-13 Brown & Williamson Tobacco Corporation Cigarette filter
US4342322A (en) * 1980-12-22 1982-08-03 Brown & Williamson Tobacco Corporation Cigarette filter
US4582071A (en) * 1980-12-22 1986-04-15 Imperial Group Limited Tipping assembly for an elongate smoking article
FR2496415A1 (fr) * 1980-12-22 1982-06-25 Brown & Williamson Tobacco Filtre a cigarette
EP0059040A1 (en) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Smoking article with secondary air channels and apparatus for producing the same
US4616664A (en) * 1981-03-17 1986-10-14 American Brands, Inc. Tobacco product
EP0061275A1 (en) * 1981-03-17 1982-09-29 American Brands, Inc. Tobacco product
US4481959A (en) * 1981-07-06 1984-11-13 American Filtrona Corporation, 8401 Filtering means
US4492240A (en) * 1981-07-06 1985-01-08 Hayes Ernest B Smoke filter
US4480649A (en) * 1981-07-06 1984-11-06 Hayes Ernest B Filter device
FR2513094A1 (fr) * 1981-09-21 1983-03-25 Brown & Williamson Tobacco Filtre de cigarette
US4492238A (en) * 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
US4587982A (en) * 1981-12-23 1986-05-13 Imperial Group Plc Tipping assembly for an elongate smoking article
EP0083197A1 (en) * 1981-12-23 1983-07-06 Imperial Group Plc A tipping assembly for an elongate smoking article
US4406294A (en) * 1982-02-16 1983-09-27 Brown & Williamson Tobacco Corporation Cigarette filter
DE3304764A1 (de) * 1982-02-16 1983-08-25 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
DE3311902C3 (de) * 1982-04-05 2002-07-11 Filtrona Ltd Filtermundstück für Zigaretten
EP0093478A3 (en) * 1982-05-03 1984-01-18 Turmac Tobacco Company B.V. Filter cigarette
EP0093478A2 (en) * 1982-05-03 1983-11-09 Turmac Tobacco Company B.V. Filter cigarette
US4583560A (en) * 1982-07-07 1986-04-22 Mitsubishi Acetate Co., Ltd Tobacco smoke filter
US4542754A (en) * 1983-12-05 1985-09-24 Brown & Williamson Tobacco Corporation Filtered cigarette
US4646762A (en) * 1983-12-05 1987-03-03 Brown & Williamson Tobacco Corporation Cigarette having a mouthpiece
US4602647A (en) * 1984-01-02 1986-07-29 B.A.T. Cigaretten-Fabriken Gmbh Ventilating tip for a smokable article
DE3400004A1 (de) * 1984-01-02 1985-07-18 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Ventilationselement fuer einen rauchbaren artikel
US4574821A (en) * 1984-03-22 1986-03-11 Philip Morris Incorporated Expanded wrapper and smoking articles including same
US4553556A (en) * 1984-03-22 1985-11-19 Philip Morris Incorporated Cigarette having a corrugated wrapper
DE3522562A1 (de) * 1984-06-25 1986-01-02 Brown & Williamson Tobacco Corp., Louisville, Ky. Filter fuer eine zigarette
US4582072A (en) * 1984-06-25 1986-04-15 Brown & Williamson Tobacco Corporation Cigarette filter
AT392876B (de) * 1984-11-09 1991-06-25 Brown & Williamson Tobacco Verfahren und vorrichtung zur herstellung eines tabakrauchfilters sowie einer filterzigarette
US4646763A (en) * 1985-11-19 1987-03-03 Philip Morris Incorporated Adjustable filter cigarette
US4700725A (en) * 1986-04-17 1987-10-20 Philip Morris Incorporated Adjustable filter cigarette
DE3715257C2 (de) * 1986-05-09 1998-02-19 American Tobacco Co Ganztabakzigarette mit verringerter Teerabgabe
DE3715257A1 (de) * 1986-05-09 1987-11-12 American Tobacco Co Verfahren zum herstellen einer ganztabakzigarette mit kontrolle der teerabgabe und ganztabakzigarette
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US4869276A (en) * 1987-08-26 1989-09-26 Philip Morris Incorporated Hinged filter sleeve
EP0306186A1 (en) * 1987-08-26 1989-03-08 Philip Morris Products Inc. Hinged filter sleeve
EP0476969A1 (en) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Filter cigarette
US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US20030211436A1 (en) * 2002-05-07 2003-11-13 Gregory Desmond Candlestick
US20080251091A1 (en) * 2004-10-06 2008-10-16 Rhodia Acetow Gmbh Tobacco Smoking Filter or Filter Element with a Content of Adjuncts
US20080314401A1 (en) * 2005-12-15 2008-12-25 Gallaher Limited Smoking Article
RU2562035C2 (ru) * 2009-11-12 2015-09-10 Филтрона Филтер Продактс Девелопмент Ко. Пти, Лтд Фильтр для табачного дыма
US8205621B1 (en) 2011-01-27 2012-06-26 Wayne Seeley Smoking device for aiding cessation of smoking
CN103648310A (zh) * 2011-07-20 2014-03-19 英美烟草(投资)有限公司 通气的吸烟物品
CN103648310B (zh) * 2011-07-20 2016-12-28 英美烟草(投资)有限公司 通气的吸烟物品
US20210145054A1 (en) * 2013-03-15 2021-05-20 Altria Client Services Llc Electronic smoking article
IT201600075162A1 (it) * 2016-07-18 2018-01-18 Montrade S P A Bacchetta filtro per articoli da fumo, metodo per la sua fabbricazione e filtro ottenuto a partire da tale bacchetta filtro
CN110140999A (zh) * 2019-04-30 2019-08-20 上海新型烟草制品研究院有限公司 一种气雾产生制品
CN112006328A (zh) * 2019-05-13 2020-12-01 湖北中烟工业有限责任公司 烟草制品的过滤部件以及烟草制品
US11076637B2 (en) 2019-08-06 2021-08-03 Weedgets Inc. Compact pipe for smoking cannabis
US11785981B2 (en) 2020-01-17 2023-10-17 Good Tree International, Inc. Hollow leaf tube with flavor capsule
US11700879B2 (en) 2021-02-26 2023-07-18 Good Tree International, Inc. Smoking accessory with filter and filter having a flavor capsule
US11744281B2 (en) 2021-03-24 2023-09-05 Good Tree International, Inc. Hollow conical member with flavor capsule
US11910821B2 (en) 2021-03-24 2024-02-27 Good Tree International, Inc. Filters and elongated members formed of palm paper and having a flavor capsule
US11969008B2 (en) 2021-03-24 2024-04-30 Good Tree International, Inc. Filters and elongated members formed of palm paper and having a flavor capsule
US20230130063A1 (en) * 2021-10-26 2023-04-27 Good Tree International, Inc. Filter having a shaped rim structure and a flavor capsule
US20230248055A1 (en) * 2021-10-26 2023-08-10 Good Tree International, Inc. Filter having a shaped rim structure and a flavor capsule
WO2023198758A1 (en) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Aerosol-generating article comprising a ventilation zone downstream of a downstream filter segment

Also Published As

Publication number Publication date
FR1559906A (no) 1969-03-14
JPS543960B1 (no) 1979-02-28
FI46906C (fi) 1973-08-10
NL152748B (nl) 1977-04-15
FI46906B (no) 1973-05-02
NO126293B (no) 1973-01-22
NL6802607A (no) 1968-10-21
CH470145A (de) 1969-03-31
SE341780B (no) 1972-01-17
BE712128A (no) 1968-07-15
LU55744A1 (no) 1968-08-01
AT290364B (de) 1971-05-25
GB1198772A (en) 1970-07-15
DE1657261B1 (de) 1972-02-03

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