CH631897A5 - Surgical suturing material - Google Patents
Surgical suturing material Download PDFInfo
- Publication number
- CH631897A5 CH631897A5 CH1142277A CH1142277A CH631897A5 CH 631897 A5 CH631897 A5 CH 631897A5 CH 1142277 A CH1142277 A CH 1142277A CH 1142277 A CH1142277 A CH 1142277A CH 631897 A5 CH631897 A5 CH 631897A5
- Authority
- CH
- Switzerland
- Prior art keywords
- knot
- suture
- suture material
- strand
- coating
- Prior art date
Links
- 239000003356 suture material Substances 0.000 title claims description 39
- 238000000576 coating method Methods 0.000 claims description 70
- 239000011248 coating agent Substances 0.000 claims description 63
- 230000001050 lubricating effect Effects 0.000 claims description 30
- -1 polyoxyethylene Polymers 0.000 claims description 27
- 229920001577 copolymer Polymers 0.000 claims description 18
- 229920000642 polymer Polymers 0.000 claims description 15
- 229920000954 Polyglycolide Polymers 0.000 claims description 13
- 239000004633 polyglycolic acid Substances 0.000 claims description 13
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- 229920001451 polypropylene glycol Polymers 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 235000011837 pasties Nutrition 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 230000003301 hydrolyzing effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Natural products OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims 2
- 239000000463 material Substances 0.000 description 27
- 230000009467 reduction Effects 0.000 description 27
- 239000000314 lubricant Substances 0.000 description 23
- 238000012360 testing method Methods 0.000 description 19
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 229920001296 polysiloxane Polymers 0.000 description 14
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 11
- 229920001983 poloxamer Polymers 0.000 description 10
- 229920001993 poloxamer 188 Polymers 0.000 description 10
- 239000001993 wax Substances 0.000 description 9
- 206010052428 Wound Diseases 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 239000002904 solvent Substances 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 239000012496 blank sample Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 244000145845 chattering Species 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229960001760 dimethyl sulfoxide Drugs 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000787 lecithin Substances 0.000 description 2
- 229940067606 lecithin Drugs 0.000 description 2
- 235000010445 lecithin Nutrition 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920001992 poloxamer 407 Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- LCSKNASZPVZHEG-UHFFFAOYSA-N 3,6-dimethyl-1,4-dioxane-2,5-dione;1,4-dioxane-2,5-dione Chemical group O=C1COC(=O)CO1.CC1OC(=O)C(C)OC1=O LCSKNASZPVZHEG-UHFFFAOYSA-N 0.000 description 1
- 229920004937 Dexon® Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000004936 P-84 Substances 0.000 description 1
- 229920002004 Pluronic® R Polymers 0.000 description 1
- 206010072170 Skin wound Diseases 0.000 description 1
- 229920002359 Tetronic® Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007515 enzymatic degradation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003692 nonabsorbable suture material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000012056 semi-solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L17/00—Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
- A61L17/14—Post-treatment to improve physical properties
- A61L17/145—Coating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06166—Sutures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/46—Textile oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
- C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Materials Engineering (AREA)
- Vascular Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Materials For Medical Uses (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/724,876 US4043344A (en) | 1976-09-20 | 1976-09-20 | Non-absorbable surgical sutures coated with polyoxyethylene-polyoxypropylene copolymer lubricant |
| US05/724,804 US4047533A (en) | 1976-09-20 | 1976-09-20 | Absorbable surgical sutures coated with polyoxyethylene-polyoxypropylene copolymer lubricant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH631897A5 true CH631897A5 (en) | 1982-09-15 |
Family
ID=27111048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1142277A CH631897A5 (en) | 1976-09-20 | 1977-09-19 | Surgical suturing material |
Country Status (29)
| Country | Link |
|---|---|
| JP (1) | JPS5338186A (xx) |
| AR (1) | AR218635A1 (xx) |
| AU (1) | AU512830B2 (xx) |
| BE (1) | BE858846A (xx) |
| BR (1) | BR7706201A (xx) |
| CA (1) | CA1087952A (xx) |
| CH (1) | CH631897A5 (xx) |
| DD (1) | DD132847A5 (xx) |
| DE (1) | DE2741765A1 (xx) |
| DK (1) | DK153365C (xx) |
| EG (1) | EG12793A (xx) |
| ES (1) | ES462491A1 (xx) |
| FI (1) | FI71666C (xx) |
| FR (1) | FR2364661A1 (xx) |
| GB (1) | GB1584803A (xx) |
| GR (1) | GR72957B (xx) |
| HU (1) | HU180417B (xx) |
| IL (1) | IL52654A0 (xx) |
| IT (1) | IT1090226B (xx) |
| NL (1) | NL185706C (xx) |
| NO (1) | NO140812C (xx) |
| NZ (1) | NZ184884A (xx) |
| PH (1) | PH17363A (xx) |
| PL (1) | PL112545B1 (xx) |
| PT (1) | PT66999B (xx) |
| RO (1) | RO74976A (xx) |
| SE (1) | SE459785B (xx) |
| YU (1) | YU218377A (xx) |
| ZA (1) | ZA774669B (xx) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56159166A (en) * | 1980-05-12 | 1981-12-08 | Toyo Boseki | Laminate |
| GR81917B (xx) * | 1983-06-06 | 1984-12-12 | Ethicon Inc | |
| US4532929A (en) * | 1984-07-23 | 1985-08-06 | Ethicon, Inc. | Dry coating of surgical filaments |
| JPS63251383A (ja) * | 1987-04-07 | 1988-10-18 | Mazda Motor Corp | 車両の下部車体構造 |
| US5352515A (en) * | 1992-03-02 | 1994-10-04 | American Cyanamid Company | Coating for tissue drag reduction |
| DE19511340C1 (de) * | 1995-03-28 | 1996-10-02 | Hans Michael Hangleiter | Verfahren zur zeitweiligen Versiegelung oder Verfestigung von Materialien |
| JP6372158B2 (ja) * | 2014-05-15 | 2018-08-15 | 住友ベークライト株式会社 | 食品包装用シート、食品包装容器および食品包装体 |
| CN104441899B (zh) * | 2014-12-03 | 2016-08-17 | 华侨大学 | 遇水敏感性、高效抗菌复合薄膜的制备方法 |
| CN111279031B (zh) * | 2017-10-30 | 2023-08-01 | 海科材料有限公司 | 功能性温度调节纺织品添加剂及其用途 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3187752A (en) * | 1962-04-27 | 1965-06-08 | American Cyanamid Co | Non-absorbable silicone coated sutures and method of making |
| US3432898A (en) * | 1965-03-19 | 1969-03-18 | Techniservice Corp | Process of stuffer-crimping lubricated synthetic fibers |
| US4027676A (en) * | 1975-01-07 | 1977-06-07 | Ethicon, Inc. | Coated sutures |
-
1977
- 1977-08-02 ZA ZA00774669A patent/ZA774669B/xx unknown
- 1977-08-04 IL IL52654A patent/IL52654A0/xx not_active IP Right Cessation
- 1977-08-04 AU AU27630/77A patent/AU512830B2/en not_active Expired
- 1977-08-09 GB GB33409/77A patent/GB1584803A/en not_active Expired
- 1977-08-10 NZ NZ184884A patent/NZ184884A/xx unknown
- 1977-08-11 GR GR54143A patent/GR72957B/el unknown
- 1977-08-18 FI FI772472A patent/FI71666C/fi not_active IP Right Cessation
- 1977-08-24 AR AR268926A patent/AR218635A1/es active
- 1977-08-30 NL NLAANVRAGE7709548,A patent/NL185706C/xx not_active IP Right Cessation
- 1977-09-05 PT PT66999A patent/PT66999B/pt unknown
- 1977-09-13 RO RO7791584A patent/RO74976A/ro unknown
- 1977-09-14 YU YU02183/77A patent/YU218377A/xx unknown
- 1977-09-16 BR BR7706201A patent/BR7706201A/pt unknown
- 1977-09-16 PH PH20236A patent/PH17363A/en unknown
- 1977-09-16 DE DE19772741765 patent/DE2741765A1/de active Granted
- 1977-09-16 NO NO77773189A patent/NO140812C/no unknown
- 1977-09-18 EG EG77527A patent/EG12793A/xx active
- 1977-09-19 CA CA286,970A patent/CA1087952A/en not_active Expired
- 1977-09-19 IT IT7751076A patent/IT1090226B/it active
- 1977-09-19 PL PL1977200938A patent/PL112545B1/pl unknown
- 1977-09-19 CH CH1142277A patent/CH631897A5/de not_active IP Right Cessation
- 1977-09-19 BE BE181028A patent/BE858846A/xx not_active IP Right Cessation
- 1977-09-19 DK DK413977A patent/DK153365C/da not_active IP Right Cessation
- 1977-09-19 SE SE7710486A patent/SE459785B/xx not_active IP Right Cessation
- 1977-09-20 ES ES462491A patent/ES462491A1/es not_active Expired
- 1977-09-20 FR FR7728349A patent/FR2364661A1/fr active Granted
- 1977-09-20 HU HU77AE509A patent/HU180417B/hu unknown
- 1977-09-20 DD DD7700201113A patent/DD132847A5/xx unknown
- 1977-09-20 JP JP11227277A patent/JPS5338186A/ja active Granted
Also Published As
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |