US3285408A - Capsule with integral locking band - Google Patents

Capsule with integral locking band Download PDF

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Publication number
US3285408A
US3285408A US404449A US40444964A US3285408A US 3285408 A US3285408 A US 3285408A US 404449 A US404449 A US 404449A US 40444964 A US40444964 A US 40444964A US 3285408 A US3285408 A US 3285408A
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United States
Prior art keywords
cap
capsule
open
recessed
pin
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US404449A
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Angelo J Carnaghi
Jr Ivy Logsdon
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Eli Lilly and Co
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Eli Lilly and Co
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Priority to US404449A priority Critical patent/US3285408A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/07Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
    • A61J3/071Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use into the form of telescopically engaged two-piece capsules
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00Special receptacle or package
    • Y10S206/807Tamper proof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00Receptacles
    • Y10S220/34Anti-tamper pharmaceutical capsules, e.g. tamper indicating or resistant

Description

Nov. 15, 1966 A. J. CARNAGHI ETAL CAPSULE WITH INTEGRAL LOCKING BAND Filed Oct. 16, 1964 INVENTORS 0 J. CAR/VAGH/ {3g LOGSDON JR.

ATTORNEY ANGEL Y United States Patent Ofilice 3,285,408 Patented Nov. 15, 1966 3,285,408 CAPSULE WITH INTEGRAL LOCKING liAND Angelo J. Carnaghi and Ivy Logsdon, Jr., Ind anapol s, Ind., assignors to Eli Lilly and Company, Indianapolis, Ind., a corporation of Indiana Filed Oct. 16, 1964, Ser. No. 404,449 5 Claims. (Cl. 206--63.2')

This invention relates to a telescoping capsule commonly employed to contain pharmaceutical preparations, and in particular, to a capsule having a cap part so constructed as to provide a capsule which resists accidental separation.

Telescoping capsules of conventional type comprise a generally cylindrical or tubular cap part closed at one end and a generally cylindrical or tubular body part closed at one end. Both the cap. and body parts are regularly tapered outwardly towards their open ends, and the diameters of the portions are so dimensioned that the inner diameter of the cap part near its closed end is slightly less than the outer diameter of the body part at its open end. The taper in the diameter of the cap and body parts customarily is of the order of .01 to .03 inch per inch of capsule cap or body length.

A taper in the capsule parts is necessary to permit the manufacture of the capsules in mass numbers of automatic machinery. In the manufacture of capsules a plurality of properly sized steel pins are dipped into aqueous gelatin, the adherent layer of gelatin is allowed to set and is dried, and the gelatin film which forms the cap or body part as the case may be, is pulled or stripped olf the pin and cut to proper length. Were it not for the taper on the pin, the capsule part could not properly be stripped from the pin because the vacuum which would be created within it as it is being removed from the pin would hinder its removal and could even cause a partial collapse of the capsule part wall. As is obvious, a slight dislodgement of the capsule part from its position on a tapered pin permits air to seep between the capsule part and the pin and thus prevents the formation of a vacuum with its attendant disadvantages.

The taper also has other useful. functions. When. the body part is fully inserted in the cap part, the taper in the cap imparts a degree of wedging engagement with the oppositely tapered body part, thereby reducing the tendency of the cap and body to separate. Additionally, the difference in size of the open end of the cap and the open end of the body resulting from the taper in the cap provides a degree of clearance which makes the assembly of the cap and body parts a less critical operation than would be the case were there no clearance.

However, telescoping capsules of conventional construction have the decided disadvantage of being readily separable. Thus it not infrequently happens that even after the capsules have been filled and placed in containers for distribution to the ultimate user, one or more capsules may separate and spill their contents, thus rendering the remainder of the capsules in the container unsightly and frequently unpalatable. Because of the oppositely tapered configuration of the joined cap and body capsule parts, even a slight separation or displacement of the serves to release the body from its wedging enagement with the cap thereby increasing the ease and likelihood of complete separation and consequent spillage of the capsules contents.

To avoid this unwanted separation, various expedients have been employed or propsed. Separation has been eliminated by sealing the parts together with a gelatin band. Although this method is effective, it adds materially to the cost of production. It has also been proposed to construct the cap of the capsule with an internally constrit-ced portion so that as the bottom part of the capsule is inserted into the cap the open end of the tapered body is. forced past the construction to provide a secure engagement of the parts (see US. Patent No. 525,845). Although this type of capsule cap construction can doubtlessly reduce accidental separation, it not adaptable to fabrication on automatic capsule machinery, for in addition to the resistance of stripping which would be. encountered from vacuum as above noted, the constricted portion of the cap would greatly add to the dilficulty of removal of the cap part from the pin.

The invention described herein provides a separationresistant capsule which. does not require a banding operation or a constriction. It furthermore does not rely on the customary ineffective wedging principle.

By this invention there is provided a separation-resistant capsule comprising a conventional body part and a novel cap part with a cylindrical portion adjacent to the closed end of the cap, which extends approximately one-sixth the length of the cap and is of a diameter somewhat smaller than the outer diameter of the open end of the body part with which the cap is to be joined. The press fit produced upon the joining of the cap and body parts provides a strong gripping action which resists separation of the parts.

It is, therefore, one object, of this invention to provide a new and improved capsule which avoids accidental separation after filling with medicament.

A, further object of this invention is to provide a new and improved capsule cap part which is readily manufactured on automatic capsule manufacturing machinery.

A further object of this invention is to provide a capsule which may be readily shipped empty and in assembled form, subsequently disassembled and filled, and then reassembled in a locked condition by conventional methods without incurring substantial expenses or requiring extra equipment.

Other objects and advantages will be apparent upon reading the specification in connection with the drawings in which:

FIG. 1 is a front view in elevation of a pin of the type used for producing a cap forming a part of the capsule of this invention;

FIG. 2 is a view in cross-section taken through the center of a capsule with a cap produced by the pin of FIG. 1 which is assembled but not locked; and

FIG. 3 is a view in cross-section of the capsule in FIG. 2 and in its locked position.

Referring to FIG. 1, a cap-forming pin 11 is illustrated which can be made of stainless steel. This pin 11 is of such size as to produce a cap for a size number 1 capsule and is described below with the dimensions suitable for the production of that size of capsule. However, the principles involved in this invention are applicable for making a variety of sizes of capsules, provided that the specified dimensions are changed proportionately.

Pin 11, which is about 1.25" long, has a spindle 13 which is customarily fastened to an unillustrated mounting, along with a plurality of other like pins. Extending from the spindle is a generally cylindrical portion 15 with a diameter of .2678" .at .an imaginary line 17 corresponding to the open end of the cap to be formed. The pin is convergently tapered toward its rounded nose by a taper of about .012 inch per inch. In other words, the diameters of the pin at two points one inch from each other would differ by 0.12 inch. Interrupting the smoothly tapered wall 21 of the pin 11 is a beveled shoulder 23. The shoulder 23 is beveled from the wall 21 at an angle of 15 degrees with respect to the pins axis, although this angle is not critical and can be varied substantially. The beveled shoulder 23 is about 0.009" long. A cylindrical non-tapered wall portion of the pin which may be referred to as the locking band die surface 25 extends from the beveled shoulder parallel to the longitudinal axis of the pin. The diameter of the locking band die surface is 0.2598" and the length of the locking band 25 including the beveled portion is 0.056. The end of the pin can be tenminated in a conventional manner with a closed hemispherical end having a radius of .1324", or with a rounded end of compound curvature.

The length of the pin is about 1.5", but the length is not critical, it being only necessary to have a pin of sufficient length to permit the formation of a cap part which is about 0.38" to 0.39 long. The proper cap length is provided by a standard trimming apparatus embodied in the capsule-making machine.

A capsule-forming pin for the body part of the capsule 31 is not shown in the drawing since such is of conventional design. For a number 1 size capsule the pin is tapered in the customary manner and is so dimensioned that it will produce a body part which after trimming will have a length of 0.64 to 0.68", and an inner diameter at the above distance from its rounded, closed end of 0.2571", and bearing in mind the thickness of the capsule wall, will have an outer diameter at its open end of 0.2650".

FIG. 2 illustrates an assembled capsule 30 in an unlocked position. It is in this position that the empty capsule is shipped to the filler of the capsule. Attention is directed to the manner in which the open end of body 31 butts against the beveled shoulder 33 on the inner surface of cap 35. Accidental assembly of the capsules into a locked position during their manufacture is not likely since beveled shoulder 33 provides a positive reference point and some degree of force is required to move the end of the body part past the shoulder.

After a capsule body part has been filled, for example, with a medicament, it is assembled with the novel cap part of this invention by forcing the body into the cap beyond the position illustrated in FIG. 2 to a locked position which is shown in FIG. 3. In fully locked position the end of the body 31 butts against the end of the cap 35 at the point where the hemispherical end-wall 39 begins. The wall portion 41 of the body extending beyond the beveled shoulder is in full contact with the area of the cap referred to as locking band 45. Instead of a mere point or line contact between the body and cap, which can provide only a moderate degree of resistance to separation, the full surface of the caps locking band 45 is compressively engaged in contact with a sizable area of the body. Furthermore, inasmuch as the open end of the body is slightly compressed at its end when fully extended into the cap, locking portion 45 of the cap is complementarily bowed or sprung out because of the taper on the body part. Thus, a tight engagement of the capsule parts results. Unlike the resistive action obtained from the oppositely disposed wedging surface engagement encountered in the customary capsule, a partial displacement of the cap and body parts does not result in the complete loss of locking engagement, but merely reduces the area of contact between the cap and body parts, and so diminishes the locking action only a slight degree.

In certain siZes of capsules, it is possible that a more secure engagement of cap and body parts may be obtained by assuring escapement of any air that might be entrapped and compressed within the cap and body when they are forced together. The capsule illustrated in FIGS. 2 and 3 does not normally encounter such a problem since the small amount of air which may be compressed within the cap and body is insufiicient to overcome the resistive force occurring between the cooperating parallel locking areas of the band and cap. Should such a problem of air compression occur in any size of capsule, locking band 45 may be provided with one or more axially extending grooves to vent such amount of air as might be compressively entrapped within the capsule during the joining operation.

While only one embodiment has been illustrated and described, it is apparent that additional embodiments may be developed utilizing a parallel locking band in a capsule cap part without departing from the spirit of this invention and the scope of the appended claims.

We claim:

1. A separation-resistant capsule comprising a body telescopically engaged in a cap, said body having a closed end wall and a side wall having a generally cylindrical open-end portion, said cap having an end wall and a generally cylindrical side wall with means for selectively maintaining said body in first and second positively defined telescoped positions, said means comprising a substantially circumferential internal recessed portion of said cap side wall connected between said cap end Wall and by a shoulder to the remainder of said cap side wall, said recessed portion being parallel to the axis of said capsule, the inner surfaces of said cap having a diameter as measured progressively toward said open-end portion always being at least as great as the diameter at a preceding point to permit the cap to be readily separated axially. from a conforming internal support, said body in its first position having its open-end portion butted against the recessed portion of said cap wall and in close contact with said cap side wall, said body in its second position having its open-end portion compressed to a decreased diameter and butted against said cap end wall in compressed engagement with the recessed portion of said cap side wall.

2. A capsule according to claim 1 in which said body and cap are formed from a gelatin composition.

3. A capsule according to claim 1 in which the recessed portion of said cap side wall is connected to the remainder of said cap side wall by a beveled shoulder.

4. A capsule according to claim 1 in which the recessed portion of said cap side wall is approximately one-sixth the length of said cap.

5. A capsule according to claim 3 in which the beveled shoulder forms an angle of 15 degrees with the axis of the capsule.

References Cited by the Examiner UNITED STATES PATENTS 525,845 9/1894 Hobbs 167-83 650,760 5/1900 Metcalf 16783 1,659,399 2/ 1928 Faber. 2,718,980 9/1955 Strom 220 3,143,239 8/1964 Wiley 22042 3,173,840 3/ 1965 Hostetler 167-83 LOUIS G. MANCENE, Primary Examiner.

Claims (1)

1. A SEPARATION-RESISTANT CAPSULE COMPRISING A BODY TELESCOPICALLY ENGAGED IN A CAP, SAID BODY HAVING A CLOSED END WALL AND A SIDE WALL HAVING A GENERALLY CYLINDRICAL OPEN-END PORTION, SAID CAP HAVING AN END WALL AND A GENERALLY CYLINDRICAL SIDE WALL WITH MEANS FOR SELECTIVELY MAINTAINING SAID BODY IN FIRST AND SECOND POSITIVELY DEFINED TELESCOPED POSITIONS, SAID MEANS COMPRISING A SUBSTANTIALLY CIRCUMFERENTIAL INTERNAL RECESSED PORTION OF SAID CAP SIDE WALL CONNECTED BETWEEN SAID CAP END WALL AND BY A SHOULDER TO THE REMAINDER OF SAID CAP SIDE WALL, SAID RECESSED PORTION BEING PARALLEL TO THE AXIS OF SAID CAPSULE, THE INNER SURFACES OF SAID CAP HAVING A DIAMETER AS MEASURED PROGRESSIVELY TOWARD SAID OPEN-END PORTION ALWAYS BEING AT LEAST AS GREAT AS THE DIAMETER AT A PRECEDING POINT TO PERMIT THE CAP TO BE READILY SEPARATED AXIALLY FROM A CONFORMING INTERNAL SUPPORT, SAID BODY IN ITS FIRST POSITION HAVING ITS OPEN-END PORTION BUTTED AGAINST THE RECESSED PORTION OF SADI CAP WALL AND IN CLOSE CONTACT WITH SAID CAP SIDE WALL, SAID BODY IN ITS SECOND POSITION HAVING ITS OPEN-END PORTION COMPRESSED TO A DECREASED DIAMETER AND BUTTED AGAINST SAID CAP END WALL IN COMPRESSED ENGAGEMENT WITH THE RECESSED PORTION OF SAID CAP SIDE WALL.
US404449A 1964-10-16 1964-10-16 Capsule with integral locking band Expired - Lifetime US3285408A (en)

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Application Number Priority Date Filing Date Title
US404449A US3285408A (en) 1964-10-16 1964-10-16 Capsule with integral locking band

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US404449A US3285408A (en) 1964-10-16 1964-10-16 Capsule with integral locking band
DE19641516488 DE1516488A1 (en) 1964-10-16 1964-12-29 Einsteckkapsel
GB52705/64A GB1040859A (en) 1964-10-16 1964-12-29 Capsule with integral locking band
FR426A FR1419317A (en) 1964-10-16 1964-12-30 Capsule having a retaining zone in the closed position, particularly for pharmaceutical preparations
OA52872A OA2698A (en) 1964-10-16 1967-03-30 Capsule comprising a retaining zone in the closed position, in particular for pharmaceutical preparations.
CY48769A CY487A (en) 1964-10-16 1969-04-29 Capsule with integral locking band

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US3285408A true US3285408A (en) 1966-11-15

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US404449A Expired - Lifetime US3285408A (en) 1964-10-16 1964-10-16 Capsule with integral locking band

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US (1) US3285408A (en)
CY (1) CY487A (en)
DE (1) DE1516488A1 (en)
FR (1) FR1419317A (en)
GB (1) GB1040859A (en)
OA (1) OA2698A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664495A (en) * 1970-12-21 1972-05-23 Parke Davis & Co Locking capsule
US3823843A (en) * 1972-10-26 1974-07-16 Lilly Co Eli Locking capsule
JPS5045378U (en) * 1973-08-22 1975-05-07
US4076848A (en) * 1976-03-18 1978-02-28 Limur Eleanor De Encapsulated pulverized dehydrated fruit and vegetable product
US4247006A (en) * 1977-05-20 1981-01-27 Capsugel Ag Capsule body, in particular for use with a joined capsule for a pharmaceutical preparation, and method of and apparatus for producing it
US4325761A (en) * 1979-10-31 1982-04-20 R. P. Scherer Corporation Two-piece hardshell, soluble and digestible liquid containing gelatin capsule
EP0084529A1 (en) * 1981-07-30 1983-08-03 Scherer Corp R P Two-piece hardshell gelatin capsule and method for manufacture.
US4893721A (en) * 1982-10-29 1990-01-16 Warner-Lambert Company Tamper-proof capsules
US5794808A (en) * 1994-11-08 1998-08-18 Sauget; Judith B. Container for self-defense spray canister
US6050438A (en) * 1996-06-27 2000-04-18 Parkway Machine Corporation Spherical dispensing capsule
US6360886B1 (en) 2000-03-13 2002-03-26 Kerr Corporation Capsule for use in preparing a dental amalgam
US20060157054A1 (en) * 2005-01-11 2006-07-20 Boehringer Lngelheim Pharma Gmbh & Co. Kg Two-part capsule with pre-closure for housing pharmaceutical preparations for powder inhalers
US20080160076A1 (en) * 1998-08-05 2008-07-03 Dieter Hochrainer Two-part capsule to accept pharmaceutical preparations for powder inhalers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581875A (en) * 1983-06-20 1986-04-15 Cosden Technology, Inc. Process for forming tamper-resistant tamper-indicative capsules
DE8503747U1 (en) * 1985-02-11 1985-05-09 Klinge Pharma Gmbh, 8000 Muenchen, De
GB8611905D0 (en) * 1986-05-15 1986-06-25 Lilly Industries Ltd Capsules

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US525845A (en) * 1894-09-11 Riley p
US650760A (en) * 1899-12-02 1900-05-29 Frederick H Metcalf Gelatin capsule.
US1659399A (en) * 1914-12-12 1928-02-14 Faber Jacob Seamless hollow body and method of making the same
US2718980A (en) * 1951-10-02 1955-09-27 Robinson William H Container seal
US3143239A (en) * 1963-05-27 1964-08-04 Philip Morris Inc Container with telescopic cover
US3173840A (en) * 1962-04-30 1965-03-16 Lilly Co Eli Separation-resistant capsule

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US525845A (en) * 1894-09-11 Riley p
US650760A (en) * 1899-12-02 1900-05-29 Frederick H Metcalf Gelatin capsule.
US1659399A (en) * 1914-12-12 1928-02-14 Faber Jacob Seamless hollow body and method of making the same
US2718980A (en) * 1951-10-02 1955-09-27 Robinson William H Container seal
US3173840A (en) * 1962-04-30 1965-03-16 Lilly Co Eli Separation-resistant capsule
US3143239A (en) * 1963-05-27 1964-08-04 Philip Morris Inc Container with telescopic cover

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664495A (en) * 1970-12-21 1972-05-23 Parke Davis & Co Locking capsule
US3823843A (en) * 1972-10-26 1974-07-16 Lilly Co Eli Locking capsule
JPS5045378U (en) * 1973-08-22 1975-05-07
JPS53633Y2 (en) * 1973-08-22 1978-01-10
US4076848A (en) * 1976-03-18 1978-02-28 Limur Eleanor De Encapsulated pulverized dehydrated fruit and vegetable product
US4247006A (en) * 1977-05-20 1981-01-27 Capsugel Ag Capsule body, in particular for use with a joined capsule for a pharmaceutical preparation, and method of and apparatus for producing it
US4325761A (en) * 1979-10-31 1982-04-20 R. P. Scherer Corporation Two-piece hardshell, soluble and digestible liquid containing gelatin capsule
EP0084529A1 (en) * 1981-07-30 1983-08-03 Scherer Corp R P Two-piece hardshell gelatin capsule and method for manufacture.
EP0084529A4 (en) * 1981-07-30 1984-11-22 Scherer Corp R P Two-piece hardshell gelatin capsule and method for manufacture.
US4893721A (en) * 1982-10-29 1990-01-16 Warner-Lambert Company Tamper-proof capsules
US5794808A (en) * 1994-11-08 1998-08-18 Sauget; Judith B. Container for self-defense spray canister
US6050438A (en) * 1996-06-27 2000-04-18 Parkway Machine Corporation Spherical dispensing capsule
US20080160076A1 (en) * 1998-08-05 2008-07-03 Dieter Hochrainer Two-part capsule to accept pharmaceutical preparations for powder inhalers
US8298575B2 (en) 1998-08-05 2012-10-30 Boehringer Ingelheim Pharma Gmbh & Co. Kg Two-part capsule to accept pharmaceutical preparations for powder inhalers
US6360886B1 (en) 2000-03-13 2002-03-26 Kerr Corporation Capsule for use in preparing a dental amalgam
US6439380B1 (en) 2000-03-13 2002-08-27 Kerr Corporation Capsule for use in preparing a dental amalgam
US20060157054A1 (en) * 2005-01-11 2006-07-20 Boehringer Lngelheim Pharma Gmbh & Co. Kg Two-part capsule with pre-closure for housing pharmaceutical preparations for powder inhalers
US8662076B2 (en) 2005-01-11 2014-03-04 Boehringer Ingelheim Pharma Gmbh & Co. Kg Two-part capsule with pre-closure for housing pharmaceutical preparations for powder inhalers

Also Published As

Publication number Publication date
DE1516488A1 (en) 1970-01-08
GB1040859A (en) 1966-09-01
CY487A (en) 1969-04-29
OA02698A (en) 1970-12-15
OA2698A (en) 1970-12-15
FR1419317A (en) 1965-11-26

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