CA1113046A - Container having an outflow channel and a single-time usage seal - Google Patents
Container having an outflow channel and a single-time usage sealInfo
- Publication number
- CA1113046A CA1113046A CA276,525A CA276525A CA1113046A CA 1113046 A CA1113046 A CA 1113046A CA 276525 A CA276525 A CA 276525A CA 1113046 A CA1113046 A CA 1113046A
- Authority
- CA
- Canada
- Prior art keywords
- wire
- needle
- container
- projecting
- end portion
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
- A61M5/281—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule
- A61M5/282—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule by compression of deformable ampoule or carpule wall
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/20—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles
- B65D85/24—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles for needles, nails or like elongate small articles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3107—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle for needles
- A61M2005/311—Plugs, i.e. sealing rods or stylets closing the bore of needles
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Closures For Containers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A hypodermic syringe includes a container, a hollow needle connected to the container, and a wire extend-ing through the bore of the needle and projecting from opposite ends thereof. A front projecting end of the wire is secured to a protective cover, and d rear projecting end of the wire extends through a body of thermoplastic synthe-tic material formed in a sealing manner around the wire and the adjacent rear end of the needle. The body is sealingly secured to or forms part of the container.
A hypodermic syringe includes a container, a hollow needle connected to the container, and a wire extend-ing through the bore of the needle and projecting from opposite ends thereof. A front projecting end of the wire is secured to a protective cover, and d rear projecting end of the wire extends through a body of thermoplastic synthe-tic material formed in a sealing manner around the wire and the adjacent rear end of the needle. The body is sealingly secured to or forms part of the container.
Description
39~4~
The invention relates to hypodermic syringes of the kïnd which are only intended to be used once. Such syringes have a needle extending from a container in which the liquid ~o be injected is stored.
Known hypodermic syringes of this kind have a single-time usage seal which has to be broken in order to permit the syringe to be used. Such breaking of the seal may have disadvantageous consequences, as particles of the seal may become entrained with the liquid in the syringe and be ;njected into the body of a patient. This is parti-cularly likely when the seal comprises a rubber membrane which has to be penetrated by the needle of the syringe.
Particulate matter of the membrane may be transported into the body of the patient.
The rubber membrane may be in a hypodermic syringe intended for single-time usage, lying between the needle and the liquid contents. However, the rubber membrane alterna-ti`vely may be in the sealing of an ampoule or glass cartrid~e i`n which the liquid to be injected is contained. The membrane has to be penetrated by the needle of a normal hypodermic syringe in order to permit the contents to be drawn -through the needle into the hypodermic syringe.
Apart from the above-mentioned problem of contamina- ~ -tion of the liquid contents of the container with small par-ticles of the ruptured seal, there is also the problem that the seal has to be compatible with the liquid contents of the container~ -With hypodermic syringes of a very small volume, the seal has to be correspondingly small and at the same ti`me must be compatible with the liquid in the container.
Such seals are very expensive. Actually, rubber is not a ~ ' ~A~
' ~3~6 particularly sui-table material for the seal of a hypodermic syr;nge. However, other materials are not readily available.
An object of the invention is to provide an improved arrangement in which no particles of the seal become mixed with the contents of the con-tainer, which container is inexpensive and in which materials can be used which are inert to a high degree with respect to the contents of the container.
The present invention provides a hypodermic syringe comprising a container, a hollow needle connected to the container and a wire extending through the bore of the needle and projecting from opposite ends thereof, a front project-i`ng end of the wire being secured to a protective cover, and a rear projecting end of the wire extending through a body of thermoplastic synthetic ma-terial formed in a sealing manner around the wire and the adjacent rear end of the needle, said body being sealingly secured to or forming part of the container.
~reaking the seal is effected by removing the cover and thereby pulling out the wire from the needle.
When the wire is pulled out completely, a clean channel through the plastic body and needle is obtained, with no particles of the wire remaining, so that there are no wire particles which migh~ become entrained with the contents of the container. If the wire-should break during pull-out and a remnant should remain in the channel, then the needle and/or plastic body remains obstructed. The risk of this occurring can of course be reduced by correct chbice of wire material.
The present invention also provides a method for manufacturïng a needle, wire and plastic body combination "J, i ' 3~
for a hypodermic syringe, wherein a hollow needle with a wire extending therethrough and projecting from opposite ends thereof is placed in a casting mold such that a rear end portion of the needle and the associated projecting wire end portion are located in a mold cavity and the wire end por-tion extends through the cavity to a clamp for clamping the end of the wire, injecting synthetic thermoplastic material i`nto the mold cavity to form a body of synthetic plastic material around the wire and adjacent the rear end portion of the needle, and removing the needle, wire and plastic body combination from the casting mold. The molded body will shrink around the wire and constitute a press fit, which assures a good sealing.
Preferably the wire consists of a synthetic material, ;
the melting point of which i.s higher than that of the ~ody in which the wire fits.
One embodiment of the invention will now be des- .
cribed, by way of example, with reference to the accompanying drawings, of which: `
Figure 1 is a side view, partly in section, of a hypodermic syringe, and ~igure 2 is a sectional side view of a portion of a casting mold for producing a part of the syringe of Figure l.
Referring to the drawings, Figure 1 shows a hypo-aermic syringe having a container 1 of the type described in : British patent No. 1,503,585. A hvpodermic needle 2 is secured to the container l, and has an exposed portion pro-tected by a cover 3. A wire 4 extends through the needle 2 and has an end 5 permanently connected to the cover 3. The other end 13 of the wire projects from the inner end 6 of the needle 2.
`~ ~$~3~6 The inner end 6 of the needle is secured in a body of synthetic plastic material, the body having a front portion 7 for receiving the protective cover 3, a flange 8 abutting the container 1 and a conical portion 9 which is clamped into a corresponding bore 10 of the body 11 of the container 1, the body 11 having a channel 12 connecting the bore 10 with the contents of the container 1. The conical portion 9 is formed both around the inner end 6 of the needle and around the end 13 of the wire so that -the passage through the needle is completely closed at the end 6.
When the cover is removed by pulling it to the right in Figure 1, the wire 4 is pulled out of the portion 7 8, 9 of synthetic material, such that at 13 a channel is created through which the contents of the container 1 can be conveyed to the needle 2.
F.igure 2 shows a portion of a casting mold with two halves 24 and 25, which each also can be divided into a plane perpendicular to the plane of the drawing and through the axis of the mold cavity 2~. The mold cavity 20 26 has the shape of the body 7, 8, 9 shown in Figure 1.
The needle 2 with inserted wire 4 is placed in the mold half 25, and the ends of the wire 4 are supported in clamps 27, 28. The clamp 28 consists of a set of grippers, which are fastened in a conical body 29, which is placed in the mold half 24. By injection of a thermoplastic synthetic materi`al in the mold cavity 26, a body is formed which surrounds both the end of the needle and the end of the wire protruding from it. The needle 2, wire 4 and plastic body 7, 8, 9 are then assembled with a suitable container.
As a material for the plastic body 7, 8, 9, poly-ethene or polypropylene may be used, while th~ wire may consist ~13~46 of a stretched nylon wire. ~ very advantageous comblnation ïs obtained when the plastic body 7, 8, 9 consists of a plug of polyamide, for example nylon, and a wire is of Teflon (trademark). For the wire, a glass fiber covered with Teflon may also be used. The wire should be a mono-filament fiber. Other materials are possible for the plastic body 7, 8, 9, for example polyolefins, polyamides and polyesters.
Other embodiments oE the invention will be readily apparent to a person skilled in the art, the scope of the invention being defined in the appended claims.
The invention relates to hypodermic syringes of the kïnd which are only intended to be used once. Such syringes have a needle extending from a container in which the liquid ~o be injected is stored.
Known hypodermic syringes of this kind have a single-time usage seal which has to be broken in order to permit the syringe to be used. Such breaking of the seal may have disadvantageous consequences, as particles of the seal may become entrained with the liquid in the syringe and be ;njected into the body of a patient. This is parti-cularly likely when the seal comprises a rubber membrane which has to be penetrated by the needle of the syringe.
Particulate matter of the membrane may be transported into the body of the patient.
The rubber membrane may be in a hypodermic syringe intended for single-time usage, lying between the needle and the liquid contents. However, the rubber membrane alterna-ti`vely may be in the sealing of an ampoule or glass cartrid~e i`n which the liquid to be injected is contained. The membrane has to be penetrated by the needle of a normal hypodermic syringe in order to permit the contents to be drawn -through the needle into the hypodermic syringe.
Apart from the above-mentioned problem of contamina- ~ -tion of the liquid contents of the container with small par-ticles of the ruptured seal, there is also the problem that the seal has to be compatible with the liquid contents of the container~ -With hypodermic syringes of a very small volume, the seal has to be correspondingly small and at the same ti`me must be compatible with the liquid in the container.
Such seals are very expensive. Actually, rubber is not a ~ ' ~A~
' ~3~6 particularly sui-table material for the seal of a hypodermic syr;nge. However, other materials are not readily available.
An object of the invention is to provide an improved arrangement in which no particles of the seal become mixed with the contents of the con-tainer, which container is inexpensive and in which materials can be used which are inert to a high degree with respect to the contents of the container.
The present invention provides a hypodermic syringe comprising a container, a hollow needle connected to the container and a wire extending through the bore of the needle and projecting from opposite ends thereof, a front project-i`ng end of the wire being secured to a protective cover, and a rear projecting end of the wire extending through a body of thermoplastic synthetic ma-terial formed in a sealing manner around the wire and the adjacent rear end of the needle, said body being sealingly secured to or forming part of the container.
~reaking the seal is effected by removing the cover and thereby pulling out the wire from the needle.
When the wire is pulled out completely, a clean channel through the plastic body and needle is obtained, with no particles of the wire remaining, so that there are no wire particles which migh~ become entrained with the contents of the container. If the wire-should break during pull-out and a remnant should remain in the channel, then the needle and/or plastic body remains obstructed. The risk of this occurring can of course be reduced by correct chbice of wire material.
The present invention also provides a method for manufacturïng a needle, wire and plastic body combination "J, i ' 3~
for a hypodermic syringe, wherein a hollow needle with a wire extending therethrough and projecting from opposite ends thereof is placed in a casting mold such that a rear end portion of the needle and the associated projecting wire end portion are located in a mold cavity and the wire end por-tion extends through the cavity to a clamp for clamping the end of the wire, injecting synthetic thermoplastic material i`nto the mold cavity to form a body of synthetic plastic material around the wire and adjacent the rear end portion of the needle, and removing the needle, wire and plastic body combination from the casting mold. The molded body will shrink around the wire and constitute a press fit, which assures a good sealing.
Preferably the wire consists of a synthetic material, ;
the melting point of which i.s higher than that of the ~ody in which the wire fits.
One embodiment of the invention will now be des- .
cribed, by way of example, with reference to the accompanying drawings, of which: `
Figure 1 is a side view, partly in section, of a hypodermic syringe, and ~igure 2 is a sectional side view of a portion of a casting mold for producing a part of the syringe of Figure l.
Referring to the drawings, Figure 1 shows a hypo-aermic syringe having a container 1 of the type described in : British patent No. 1,503,585. A hvpodermic needle 2 is secured to the container l, and has an exposed portion pro-tected by a cover 3. A wire 4 extends through the needle 2 and has an end 5 permanently connected to the cover 3. The other end 13 of the wire projects from the inner end 6 of the needle 2.
`~ ~$~3~6 The inner end 6 of the needle is secured in a body of synthetic plastic material, the body having a front portion 7 for receiving the protective cover 3, a flange 8 abutting the container 1 and a conical portion 9 which is clamped into a corresponding bore 10 of the body 11 of the container 1, the body 11 having a channel 12 connecting the bore 10 with the contents of the container 1. The conical portion 9 is formed both around the inner end 6 of the needle and around the end 13 of the wire so that -the passage through the needle is completely closed at the end 6.
When the cover is removed by pulling it to the right in Figure 1, the wire 4 is pulled out of the portion 7 8, 9 of synthetic material, such that at 13 a channel is created through which the contents of the container 1 can be conveyed to the needle 2.
F.igure 2 shows a portion of a casting mold with two halves 24 and 25, which each also can be divided into a plane perpendicular to the plane of the drawing and through the axis of the mold cavity 2~. The mold cavity 20 26 has the shape of the body 7, 8, 9 shown in Figure 1.
The needle 2 with inserted wire 4 is placed in the mold half 25, and the ends of the wire 4 are supported in clamps 27, 28. The clamp 28 consists of a set of grippers, which are fastened in a conical body 29, which is placed in the mold half 24. By injection of a thermoplastic synthetic materi`al in the mold cavity 26, a body is formed which surrounds both the end of the needle and the end of the wire protruding from it. The needle 2, wire 4 and plastic body 7, 8, 9 are then assembled with a suitable container.
As a material for the plastic body 7, 8, 9, poly-ethene or polypropylene may be used, while th~ wire may consist ~13~46 of a stretched nylon wire. ~ very advantageous comblnation ïs obtained when the plastic body 7, 8, 9 consists of a plug of polyamide, for example nylon, and a wire is of Teflon (trademark). For the wire, a glass fiber covered with Teflon may also be used. The wire should be a mono-filament fiber. Other materials are possible for the plastic body 7, 8, 9, for example polyolefins, polyamides and polyesters.
Other embodiments oE the invention will be readily apparent to a person skilled in the art, the scope of the invention being defined in the appended claims.
Claims (3)
1. A hypodermic syringe comprising a container, a hollow needle connected to the container and a wire extending through the bore of the needle and projecting from opposite ends thereof, a front projecting end of the wire being secured to a protective cover, and a rear projecting end of the wire extending through a body of thermoplastic synthetic material formed in a sealing manner around the wire and the adjacent rear end of the needle, said body being sealingly secured to or forming part of the container.
2. A hypodermic syringe according to claim 1 wherein the wire consists of synthetic material the melting point of which is higher than that of the plastic body.
3. A method for manufacturing a needle, wire and plastic body combination for a hypodermic syringe, wherein a hollow needle with a wire extending therethrough and projecting from opposite ends thereof is placed in a casting mold such that a rear end portion of the needle and the associated project-ing wire end portion are located in a mold cavity and the wire end portion extends through the cavity to a clamp for clamping the end of the wire, injecting synthetic thermo-plastic material into the mold cavity to form a body of synthetic plastic material around the wire and adjacent the rear end portion of the needle, and removing the needle, wire and plastic body combination from the casting mold.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL76.04220 | 1976-04-21 | ||
NL7604220A NL7604220A (en) | 1976-04-21 | 1976-04-21 | HOLDER WITH OUTFLOW DUCT AND ONE-TIME CLOSURE. |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1113046A true CA1113046A (en) | 1981-11-24 |
Family
ID=19826045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA276,525A Expired CA1113046A (en) | 1976-04-21 | 1977-04-20 | Container having an outflow channel and a single-time usage seal |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS52152379A (en) |
AU (1) | AU512043B2 (en) |
BE (1) | BE853799A (en) |
BR (1) | BR7702512A (en) |
CA (1) | CA1113046A (en) |
DE (1) | DE2717524A1 (en) |
DK (1) | DK174077A (en) |
FR (1) | FR2348710A1 (en) |
GB (1) | GB1575551A (en) |
IL (1) | IL51931A (en) |
LU (1) | LU77141A1 (en) |
NL (1) | NL7604220A (en) |
SE (1) | SE428424B (en) |
ZA (1) | ZA772414B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022241U (en) * | 1983-07-20 | 1985-02-15 | 株式会社 宮川工作所 | Auxiliary table for machine tools |
US5433711A (en) * | 1994-08-01 | 1995-07-18 | Monsanto Company | Syringe with cannula-protecting sheath and sealing center rod |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2228936A (en) * | 1936-11-25 | 1941-01-14 | Carl W Walter | Flask and closure means therefor |
DE1057737B (en) * | 1955-05-03 | 1959-05-21 | Gruenenthal Chemie | Injection ampoule for multiple media and single use |
IT609174A (en) * | 1957-07-31 | |||
GB1136251A (en) * | 1965-01-11 | 1968-12-11 | English Electric Co Ltd | Nuclear reactor fuel handling systems |
FR1443637A (en) * | 1965-08-02 | 1966-06-24 | Process for the manufacture of a heat sink for a transistor, as well as the heat sink obtained by carrying out this process or a similar process | |
US3405713A (en) * | 1966-10-24 | 1968-10-15 | Solowey Ida | Combination hypodermic needle blocker and needle sheath |
US3476180A (en) * | 1967-06-30 | 1969-11-04 | Exxon Research Engineering Co | Studded heat exchanger tubes |
SE376995B (en) * | 1969-08-13 | 1975-06-16 | Transnucleaire | |
GB1265290A (en) * | 1971-02-02 | 1972-03-01 | ||
JPS4833120A (en) * | 1971-08-26 | 1973-05-08 | ||
BE808731A (en) * | 1973-12-17 | 1974-04-16 | Centre Etd Energie Nucleaire | Radioactive object transport container - using copper plated stainless steel esp for irradiated fuel rod assemblies |
-
1976
- 1976-04-21 NL NL7604220A patent/NL7604220A/en not_active Application Discontinuation
-
1977
- 1977-04-15 AU AU24303/77A patent/AU512043B2/en not_active Expired
- 1977-04-15 LU LU77141A patent/LU77141A1/xx unknown
- 1977-04-20 DK DK174077A patent/DK174077A/en active IP Right Grant
- 1977-04-20 DE DE19772717524 patent/DE2717524A1/en not_active Withdrawn
- 1977-04-20 BR BR7702512A patent/BR7702512A/en unknown
- 1977-04-20 IL IL51931A patent/IL51931A/en unknown
- 1977-04-20 SE SE7704546A patent/SE428424B/en unknown
- 1977-04-20 CA CA276,525A patent/CA1113046A/en not_active Expired
- 1977-04-21 FR FR7712049A patent/FR2348710A1/en active Granted
- 1977-04-21 GB GB16538/77A patent/GB1575551A/en not_active Expired
- 1977-04-21 JP JP4631077A patent/JPS52152379A/en active Pending
- 1977-04-21 ZA ZA00772414A patent/ZA772414B/en unknown
- 1977-04-21 BE BE176881A patent/BE853799A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IL51931A (en) | 1981-06-29 |
DE2717524A1 (en) | 1977-11-10 |
BR7702512A (en) | 1977-12-13 |
AU512043B2 (en) | 1980-09-18 |
JPS52152379A (en) | 1977-12-17 |
GB1575551A (en) | 1980-09-24 |
NL7604220A (en) | 1977-10-25 |
DK174077A (en) | 1977-10-22 |
SE428424B (en) | 1983-07-04 |
FR2348710A1 (en) | 1977-11-18 |
IL51931A0 (en) | 1977-06-30 |
LU77141A1 (en) | 1977-08-10 |
SE7704546L (en) | 1977-10-22 |
FR2348710B1 (en) | 1982-06-25 |
ZA772414B (en) | 1978-03-29 |
BE853799A (en) | 1977-10-21 |
AU2430377A (en) | 1978-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |