CA1123392A - Plastic bag with a filling valve - Google Patents
Plastic bag with a filling valveInfo
- Publication number
- CA1123392A CA1123392A CA325,333A CA325333A CA1123392A CA 1123392 A CA1123392 A CA 1123392A CA 325333 A CA325333 A CA 325333A CA 1123392 A CA1123392 A CA 1123392A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- flap
- end wall
- corner
- Prior art date
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
- B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
- Filtering Materials (AREA)
- External Artificial Organs (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Plastic bag with filling valve and an air-permeable fine-materials-filtering layer extending from the interior of the bag toward the exterior. The filtering layer of e.g.
a felt or non woven is at least partially covered by the bottom of the bag and forms a closed pocket opposite the filling valve, whilst it can also surround a filling valve tube.
Plastic bag with filling valve and an air-permeable fine-materials-filtering layer extending from the interior of the bag toward the exterior. The filtering layer of e.g.
a felt or non woven is at least partially covered by the bottom of the bag and forms a closed pocket opposite the filling valve, whilst it can also surround a filling valve tube.
Description
- l~lZ33~
The present invention relates to a plastic bag with a filling valve and a gas-permeable fine-material-filterin~a layer to permit gas to escape from the interior of the bag to the exterior.
Plastics bags of this type with a filling valve, are known.
When stacking these known plastic bags after filling,problems may arise. In many cases pulverized material which has to be packed with much air in a bag of this type, tends to escape with enclosed air and to adhere to the outside of the bag. This material will then function as a sliding means, thus hampering the stability of stacked plastic bags.
It has further been observed that when air escapes from stacked bags,this does not proceed perfectly so that in case of somewhat leaking valves or leaking parts of the bag, not only said air escapes, but also a small quantity of the pulverized or powdered product. The latter implies also a great number of undesired sliding points in a stack of bags.
This sliding will furthermore be increased in that the pulverized material, escaping from the bag, adheres to the outside of plastic bags owing to electrostatic charges.
Efforts have been made to solve the abovementioned problems by giving the bags a rough outside but this roughening did not produce the desired results. Consequently pulverized materials are therefore presently packed in paper bags exclusively.
The said paper bags are, however, not moisture-resistant and may be easily damaged during a long distance transport so that the packed substances will get lost.
It has also been proposed to provide the whole wall of a plastic bag with small pores which only permit an escape of air, but in practice it has appeared that the said pores are insufficient.
Not only will the air escape too slowly, but the pulverized material will also escape through the pores as yet or will close them off completely~
-- 1 ~
11~33~
f~
The pre~ent invention ~imY to provid~ a pl~tic bag ~hich the ~bove-mentioned di~ndvantnges nre ~llevi~ted.
In nccordance with the pre~ent invention there ~ 9 provided a plasticq bag having ~t respective corners of one end of the bag, a filling entry throu~h which th~
bag can be filled and a ga~ exit through which gas cnn ~scape from the interior of the bag, the gas exit comprisin~ ~ pocket formed of a gas perme~ble materi~l which extends into the bag between an end wall of the bag nnd an inturned corner-flap of the bag, the exterior of the pocket being ~ecured to said end wall and c~rner flap.
` The pocket in addition to providing an exit for gas from the bag al~o pro~ides a mean~ by which the bag can be easily removed from the fillin~ nozzle ~fter the ba~ has been filled ~nd for thi~ reason advant~geously the pocket interior i~ freely accessible from the exterior of the bag whereby ~he bag may be seized by puttin~ a hand into the pocket.
~ he ga-q permeable material advantageously may compri~e non-woven thermopla~tics material for example polyethylene fibre~ or ~ore preferably polyester fibreq.
Advantageou~ly the ~a~ permeable material of the pocket comprise~ a layer of material which permits permeation of gas therethrough in the plane of the layer ~nd perpendicularly thereto.
Furthermore, the exterior o~ the pocket may be~secured to the end wall and corner flap of the bagby being he~t ~ealed thereto, or by means of ~n adhesive.
In order that the invention ~ay be well understood an embodiment thereof will now be de~cribed with reference to the ~ccompanying drawings, in which:
- Fig. 1 schematically shows part of a plastic bag with a filling valve in accordance with the invention;
- Fig. 2 schematically shows part of a plastic bag comprising a gas-permeable layer located opposite the filling valve, in the shape of a non_woven pocket;
- Fig. 3 shows a top view of a bottom of a bag provided with a filling valve and a gas-permeable pocket in accordance with ~ig. 1 and 2, - Fig. 4 shows a cross section through a filling valve and a gas-permeable layer in the bag of Fig. 3 .
~lZ3392 Fig. 1 shows ~ plastic bag 1 comprising a front bag foil layer and a rear bag foil layer ~orming togeth~r a tubular foil of e.g. poly-ethylene foil material.
Bag 1 is provided with a bottom 2 formed by a first bottom flap ~ and a second bottom flap 4 which are interconnected by an adhesive connection or a welding joint 5.
The first and second bottom flap 3 and ~ present a bottom flap end edge 8 and ~.
When forming the bottom, first and second corner flaps 11 and 12 are simultaneously formed. The first corner flap 11 is provided with a first corner flcp edge 14 being located within the bag. The second corner flap 12 is provided with a second corner end edge 13.
After having formed the corner flaps ~1 and 12 a plastic valve tube 6 is positioned onto the first corner flap 11. Prefer~bly an inner end part 16 is folded backwards towards the protruding end 17 of the valve tube 6, and this part 16 will be fixed to the first corner flap 11 and a bottom covering foil layer~21.
The valve tube 6 will constitute a ~illing valve 1O located within the bag and extending in the bag farther than the corner flap end edge 14 of the second corner flap 12.
The free end edge 17 of the filling valve tube o will protrude outside the interior of the bag. By means of adhesive connections or heatseals 19 and 20 the valve tvbe 6 is connected with the corner flap 11 and with a bottom covering foil layer 21 which is fixed along the folded back bottom flaps 3 an`d 4. Upon the second corner flap 12 ~ pocket 22 of gas-permeable material is fixed of a length such, that same extends to beyond the inner end edge 13 of the second corner flap 12 inside the bag.
In the vicinity of it~ free outer edge 23 the pocket 22 is affixad to the bottom foil 21 covering the bottom flaps 3 and 4 being folded toward each other and the parts of the second corner flap 12 located directly therebelow, by means of an adhesive or a heatseal~
It will be clear that the fine-materials-filtering gas-permeable pocket 22 permits a gas or air as used for filling and now being enclosed in the bag to escape, as the interior of the bag is now connected with the exterior thrcugh the gas-permeable pocket 22. This gas-permeable pocket 22 comprises layers 22a and 22b, the edges of which are inter-connected or integral with each other, thus forming said gas-permeable pocket 22.
- 11233~2 After having filled the bag by means of a filling machine, during which period the bag suspends from the filling machine through the filling valve 6, the bag can be easily removed from the filling machine, as by putting a hand in the pocket 22, the plastic bag, which is very smooth, may be easily seized and re~oved from the filling machine.
~ or that purpose the mouth 26 of the pocket 22 is opened, ~h~reafter a hand can be put into the pocket 22 until same reaches the pocket bottom 15 of the pocket 22. As can be seen, the pocket bottom 15 extends within the bag to beyond the edge 14 of the second corner flap 12.
The second corner flap 12 and the bottom covering foil 21 are unable to contact each other 60 that an optimum removal of gas or air is ensured.
The pocket bottom 15 forms the air,permeable connection between the two layers ~2a, 22b.
As can be seen, the adhesive strip parts or heatseals ~4 and 25 connect the layer 22a of the pocket with the inner side of the in-wardly folded parts of the bottom flaps 24a, 24b and with the covering foil 21 and layer 22b with the corner flap 12.
For filling the bag,mouth 10 of the filling valve 6 is opened.
Fig. 3 shows that the adhesive strip parts or heat seals 2na and 20b are disposed between the tubular valve foil 6 and the inside of the inwardly folded parts of the bottom flaps 3 and 4. So as to avoid loose parts of the covering bottom layer 21~the end region 27 of the covering layer 21 is completely connected to the valve tube 6 along its whole width in,a flatte m d state.
If desired, the covering layer 21 can be omitted and the bottom can be formed by providing the tubular bag foil with incisions and folding the bottom flaps, as described in British Patent Specification 1 07~ 856.
It should be noted that the bags according to the invention are very advantageous in that the strength of none of the bag walls is impaired by using the gas-permeable layer. This is mainly due to the fact that the gas-permeable l~yer is covered by the bottom parts of the bag.
~ ~ . .~ .
-- 4 -- . . .
- 1~233~2 Those skilled in the art will appreciate that further embodiments ma~ exist falling within the scope of the present invention, even though departin~ from the preferred embodiment described above.
. :
The present invention relates to a plastic bag with a filling valve and a gas-permeable fine-material-filterin~a layer to permit gas to escape from the interior of the bag to the exterior.
Plastics bags of this type with a filling valve, are known.
When stacking these known plastic bags after filling,problems may arise. In many cases pulverized material which has to be packed with much air in a bag of this type, tends to escape with enclosed air and to adhere to the outside of the bag. This material will then function as a sliding means, thus hampering the stability of stacked plastic bags.
It has further been observed that when air escapes from stacked bags,this does not proceed perfectly so that in case of somewhat leaking valves or leaking parts of the bag, not only said air escapes, but also a small quantity of the pulverized or powdered product. The latter implies also a great number of undesired sliding points in a stack of bags.
This sliding will furthermore be increased in that the pulverized material, escaping from the bag, adheres to the outside of plastic bags owing to electrostatic charges.
Efforts have been made to solve the abovementioned problems by giving the bags a rough outside but this roughening did not produce the desired results. Consequently pulverized materials are therefore presently packed in paper bags exclusively.
The said paper bags are, however, not moisture-resistant and may be easily damaged during a long distance transport so that the packed substances will get lost.
It has also been proposed to provide the whole wall of a plastic bag with small pores which only permit an escape of air, but in practice it has appeared that the said pores are insufficient.
Not only will the air escape too slowly, but the pulverized material will also escape through the pores as yet or will close them off completely~
-- 1 ~
11~33~
f~
The pre~ent invention ~imY to provid~ a pl~tic bag ~hich the ~bove-mentioned di~ndvantnges nre ~llevi~ted.
In nccordance with the pre~ent invention there ~ 9 provided a plasticq bag having ~t respective corners of one end of the bag, a filling entry throu~h which th~
bag can be filled and a ga~ exit through which gas cnn ~scape from the interior of the bag, the gas exit comprisin~ ~ pocket formed of a gas perme~ble materi~l which extends into the bag between an end wall of the bag nnd an inturned corner-flap of the bag, the exterior of the pocket being ~ecured to said end wall and c~rner flap.
` The pocket in addition to providing an exit for gas from the bag al~o pro~ides a mean~ by which the bag can be easily removed from the fillin~ nozzle ~fter the ba~ has been filled ~nd for thi~ reason advant~geously the pocket interior i~ freely accessible from the exterior of the bag whereby ~he bag may be seized by puttin~ a hand into the pocket.
~ he ga-q permeable material advantageously may compri~e non-woven thermopla~tics material for example polyethylene fibre~ or ~ore preferably polyester fibreq.
Advantageou~ly the ~a~ permeable material of the pocket comprise~ a layer of material which permits permeation of gas therethrough in the plane of the layer ~nd perpendicularly thereto.
Furthermore, the exterior o~ the pocket may be~secured to the end wall and corner flap of the bagby being he~t ~ealed thereto, or by means of ~n adhesive.
In order that the invention ~ay be well understood an embodiment thereof will now be de~cribed with reference to the ~ccompanying drawings, in which:
- Fig. 1 schematically shows part of a plastic bag with a filling valve in accordance with the invention;
- Fig. 2 schematically shows part of a plastic bag comprising a gas-permeable layer located opposite the filling valve, in the shape of a non_woven pocket;
- Fig. 3 shows a top view of a bottom of a bag provided with a filling valve and a gas-permeable pocket in accordance with ~ig. 1 and 2, - Fig. 4 shows a cross section through a filling valve and a gas-permeable layer in the bag of Fig. 3 .
~lZ3392 Fig. 1 shows ~ plastic bag 1 comprising a front bag foil layer and a rear bag foil layer ~orming togeth~r a tubular foil of e.g. poly-ethylene foil material.
Bag 1 is provided with a bottom 2 formed by a first bottom flap ~ and a second bottom flap 4 which are interconnected by an adhesive connection or a welding joint 5.
The first and second bottom flap 3 and ~ present a bottom flap end edge 8 and ~.
When forming the bottom, first and second corner flaps 11 and 12 are simultaneously formed. The first corner flap 11 is provided with a first corner flcp edge 14 being located within the bag. The second corner flap 12 is provided with a second corner end edge 13.
After having formed the corner flaps ~1 and 12 a plastic valve tube 6 is positioned onto the first corner flap 11. Prefer~bly an inner end part 16 is folded backwards towards the protruding end 17 of the valve tube 6, and this part 16 will be fixed to the first corner flap 11 and a bottom covering foil layer~21.
The valve tube 6 will constitute a ~illing valve 1O located within the bag and extending in the bag farther than the corner flap end edge 14 of the second corner flap 12.
The free end edge 17 of the filling valve tube o will protrude outside the interior of the bag. By means of adhesive connections or heatseals 19 and 20 the valve tvbe 6 is connected with the corner flap 11 and with a bottom covering foil layer 21 which is fixed along the folded back bottom flaps 3 an`d 4. Upon the second corner flap 12 ~ pocket 22 of gas-permeable material is fixed of a length such, that same extends to beyond the inner end edge 13 of the second corner flap 12 inside the bag.
In the vicinity of it~ free outer edge 23 the pocket 22 is affixad to the bottom foil 21 covering the bottom flaps 3 and 4 being folded toward each other and the parts of the second corner flap 12 located directly therebelow, by means of an adhesive or a heatseal~
It will be clear that the fine-materials-filtering gas-permeable pocket 22 permits a gas or air as used for filling and now being enclosed in the bag to escape, as the interior of the bag is now connected with the exterior thrcugh the gas-permeable pocket 22. This gas-permeable pocket 22 comprises layers 22a and 22b, the edges of which are inter-connected or integral with each other, thus forming said gas-permeable pocket 22.
- 11233~2 After having filled the bag by means of a filling machine, during which period the bag suspends from the filling machine through the filling valve 6, the bag can be easily removed from the filling machine, as by putting a hand in the pocket 22, the plastic bag, which is very smooth, may be easily seized and re~oved from the filling machine.
~ or that purpose the mouth 26 of the pocket 22 is opened, ~h~reafter a hand can be put into the pocket 22 until same reaches the pocket bottom 15 of the pocket 22. As can be seen, the pocket bottom 15 extends within the bag to beyond the edge 14 of the second corner flap 12.
The second corner flap 12 and the bottom covering foil 21 are unable to contact each other 60 that an optimum removal of gas or air is ensured.
The pocket bottom 15 forms the air,permeable connection between the two layers ~2a, 22b.
As can be seen, the adhesive strip parts or heatseals ~4 and 25 connect the layer 22a of the pocket with the inner side of the in-wardly folded parts of the bottom flaps 24a, 24b and with the covering foil 21 and layer 22b with the corner flap 12.
For filling the bag,mouth 10 of the filling valve 6 is opened.
Fig. 3 shows that the adhesive strip parts or heat seals 2na and 20b are disposed between the tubular valve foil 6 and the inside of the inwardly folded parts of the bottom flaps 3 and 4. So as to avoid loose parts of the covering bottom layer 21~the end region 27 of the covering layer 21 is completely connected to the valve tube 6 along its whole width in,a flatte m d state.
If desired, the covering layer 21 can be omitted and the bottom can be formed by providing the tubular bag foil with incisions and folding the bottom flaps, as described in British Patent Specification 1 07~ 856.
It should be noted that the bags according to the invention are very advantageous in that the strength of none of the bag walls is impaired by using the gas-permeable layer. This is mainly due to the fact that the gas-permeable l~yer is covered by the bottom parts of the bag.
~ ~ . .~ .
-- 4 -- . . .
- 1~233~2 Those skilled in the art will appreciate that further embodiments ma~ exist falling within the scope of the present invention, even though departin~ from the preferred embodiment described above.
. :
Claims (11)
1. A plastics bag having at respective corners of one end of the bag, a filling entry through which the bag can be filled and a gas exit through which gas can escape from the interior of the bag, the gas exit comprising a pocket formed of a gas permeable material which extends into the bag between an end wall of the bag and an inturned corner-flap of the bag, the exterior of the pocket being secured to said end wall and corner flap, the inner end of the pocket ending at a distance from the filling valve.
2. A bag as claimed in claim 1, wherein the pocket extends into the bag beyond the inner edge of the inturned corner flap.
3. A bag as claimed in claim 1 or 2, wherein the pocket extends into the bag beyond the inner edge of the inturned corner flap
4. A bag as claimed in claim 1 or 2, wherein the gas permeable material comprises non-woven thermoplastics material.
5. A bag as claimed in claim 1 or 2, wherein the gas permeable material comprises non-woven thermoplastics material, said thermoplastics material comprising polyester fibres.
6. A bag as claimed in claim 1 or 2, wherein the gas permeable material comprises non-woven thermoplastics material, said thermoplastics material comprising poly-ethylene fibres.
7. A bag as claimed in claim 1 or 2, wherein the gas permeable material comprises a layer which permits permeat-ation of gas therethrough in the plane of the layer and perpendicularly thereto.
8. A bag as Claimed in claim 1 or 2, wherein the exterior of the pocket is secured to said end wall and corner flap by being heat sealed thereto.
9. A bag as claimed in any one of claims 1 or 2, wherein the exterior of the pocket is secured to said end wall and.
corner flap by adhesive.
corner flap by adhesive.
10. A bag as claimed in claim 1 or 2, wherein the filling entry comprises a tube which extends into the bag between the end wall of the bag and a second inturned corner flap of the bag and is secured to said end wall and second corner-flap.
11. A bag as claimed in claim 1 or 2 r wherein:
(a) the filling entry comprises a tube which extends into the bag between the end wall of the bag and a second inturned corner flap of the bag and is secured to said end wall and said corner-flap; and (b) the wall of the tube doubles back over itself towards the upstream end of the tube and the doubled back portion of the tube wall being secured to said end wall and second corner flap of the bag.
(a) the filling entry comprises a tube which extends into the bag between the end wall of the bag and a second inturned corner flap of the bag and is secured to said end wall and said corner-flap; and (b) the wall of the tube doubles back over itself towards the upstream end of the tube and the doubled back portion of the tube wall being secured to said end wall and second corner flap of the bag.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7804027A NL179714C (en) | 1978-04-14 | 1978-04-14 | PLASTIC BAG WITH A FILLING VALVE. |
| NL7804027 | 1978-04-14 | ||
| NL7811426 | 1978-11-20 | ||
| NLAANVRAGE7811426,A NL175508C (en) | 1978-11-20 | 1978-11-20 | VALVE BAG WITH FILLING VALVE AND FILTER BAG. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123392A true CA1123392A (en) | 1982-05-11 |
Family
ID=26645404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA325,333A Expired CA1123392A (en) | 1978-04-14 | 1979-04-11 | Plastic bag with a filling valve |
Country Status (14)
| Country | Link |
|---|---|
| AT (1) | AT368974B (en) |
| AU (1) | AU528074B2 (en) |
| CA (1) | CA1123392A (en) |
| CH (1) | CH640472A5 (en) |
| DE (1) | DE2914417A1 (en) |
| DK (1) | DK148415C (en) |
| ES (1) | ES243149Y (en) |
| FR (1) | FR2422561A1 (en) |
| GB (1) | GB2018721B (en) |
| IT (1) | IT1116475B (en) |
| LU (1) | LU81148A1 (en) |
| NO (1) | NO150393C (en) |
| PT (1) | PT69484A (en) |
| SE (2) | SE7903246L (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8101126A (en) * | 1981-03-09 | 1982-10-01 | Wavin Bv | PLASTIC BAG WITH BREATHER. |
| DE3232321A1 (en) * | 1982-08-31 | 1984-03-01 | Bischof Und Klein Gmbh & Co, 4540 Lengerich | Portable package made of flexible material in the form of a sack or bag |
| EP0135605A1 (en) * | 1983-09-27 | 1985-04-03 | Fischer & Krecke | Filling valve for a valve bag |
| DE8811184U1 (en) * | 1988-09-05 | 1988-11-10 | Bischof Und Klein Gmbh & Co, 4540 Lengerich, De | |
| DE4009369A1 (en) * | 1990-03-23 | 1991-09-26 | Celcommerz High Chem Produkte | Packing for powder or gaseous materials |
| DE9101210U1 (en) * | 1991-02-02 | 1991-04-25 | Bischof Und Klein Gmbh & Co, 4540 Lengerich, De | |
| DE4140213A1 (en) * | 1991-12-06 | 1993-06-09 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh, 5962 Drolshagen, De | Filler valve for filling sacks - has valve which allows air to flow out but prevents flow of material |
| DE102016105642A1 (en) * | 2016-03-25 | 2017-09-28 | Christian Becker | Shell and method for filling a shell |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE523764C (en) * | 1931-04-27 | Bock Franz | Conveyor bag | |
| NL32346C (en) * | 1900-01-01 | |||
| DE1251596B (en) * | 1951-01-28 | 1967-10-05 | Peter Baß Rothenburg ob der Tauber | One-way clutch |
| FR1313683A (en) * | 1961-02-07 | 1962-12-28 | Natronzellstoff Und Papierfab | Internal valve hose with front edge overlap for valve bags, paper |
| US3248042A (en) * | 1962-12-26 | 1966-04-26 | Union Carbide Corp | Thermoplastic bag |
| DE1195226B (en) * | 1963-04-24 | 1965-06-16 | Wilhelm Ernst Fa | Valve sack, especially for dust-like filling material |
| DE1761324B2 (en) * | 1968-05-04 | 1976-10-28 | Wilhelmstal-Werke Gmbh Papiersackfabriken, 7590 Achern | VALVE BAG |
| DE1806333A1 (en) * | 1968-10-31 | 1970-05-14 | Sachser Papierverarb | Sacks of paper or plastic, in particular valve sacks |
| DE1920097A1 (en) * | 1969-04-21 | 1970-12-23 | Wasserthal Hans | Safety lock for cross-bottom valve bags |
| DE1949086A1 (en) * | 1969-09-29 | 1971-04-01 | Bischof & Klein | Sack valve |
| DE2037544A1 (en) * | 1970-07-29 | 1972-02-03 | Badische Anilin-& Soda-Fabrik Ag, 6700 Ludwigshafen | Perforated synthetic bag - for hygroscopic goods |
-
1979
- 1979-04-05 GB GB7911969A patent/GB2018721B/en not_active Expired
- 1979-04-09 NO NO791176A patent/NO150393C/en unknown
- 1979-04-10 DE DE19792914417 patent/DE2914417A1/en active Granted
- 1979-04-10 IT IT48687/79A patent/IT1116475B/en active
- 1979-04-11 ES ES1979243149U patent/ES243149Y/en not_active Expired
- 1979-04-11 FR FR7909176A patent/FR2422561A1/en active Granted
- 1979-04-11 SE SE7903246D patent/SE7903246L/en not_active Application Discontinuation
- 1979-04-11 SE SE7903246A patent/SE437362B/en not_active IP Right Cessation
- 1979-04-11 DK DK154379A patent/DK148415C/en not_active IP Right Cessation
- 1979-04-11 CH CH346179A patent/CH640472A5/en not_active IP Right Cessation
- 1979-04-11 CA CA325,333A patent/CA1123392A/en not_active Expired
- 1979-04-12 PT PT69484A patent/PT69484A/en unknown
- 1979-04-12 LU LU81148A patent/LU81148A1/en unknown
- 1979-04-17 AT AT0287779A patent/AT368974B/en not_active IP Right Cessation
- 1979-04-19 AU AU46236/79A patent/AU528074B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE2914417A1 (en) | 1979-10-18 |
| DE2914417C2 (en) | 1987-10-15 |
| FR2422561B1 (en) | 1984-06-15 |
| DK154379A (en) | 1979-10-15 |
| SE437362B (en) | 1985-02-25 |
| AU528074B2 (en) | 1983-04-14 |
| ATA287779A (en) | 1982-04-15 |
| NO150393C (en) | 1984-10-10 |
| ES243149Y (en) | 1980-01-16 |
| PT69484A (en) | 1979-05-01 |
| FR2422561A1 (en) | 1979-11-09 |
| GB2018721B (en) | 1982-08-25 |
| GB2018721A (en) | 1979-10-24 |
| ES243149U (en) | 1979-08-16 |
| IT1116475B (en) | 1986-02-10 |
| DK148415C (en) | 1985-11-25 |
| NO150393B (en) | 1984-07-02 |
| IT7948687A0 (en) | 1979-04-10 |
| NO791176L (en) | 1979-10-16 |
| CH640472A5 (en) | 1984-01-13 |
| AU4623679A (en) | 1980-05-29 |
| SE7903246L (en) | 1979-10-15 |
| LU81148A1 (en) | 1979-11-07 |
| DK148415B (en) | 1985-07-01 |
| AT368974B (en) | 1982-11-25 |
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