CH623232A5 - Device for delayed pharmaceutical release and process for its production - Google Patents
Device for delayed pharmaceutical release and process for its production Download PDFInfo
- Publication number
- CH623232A5 CH623232A5 CH967576A CH967576A CH623232A5 CH 623232 A5 CH623232 A5 CH 623232A5 CH 967576 A CH967576 A CH 967576A CH 967576 A CH967576 A CH 967576A CH 623232 A5 CH623232 A5 CH 623232A5
- Authority
- CH
- Switzerland
- Prior art keywords
- polymer
- drug
- depots
- soluble substance
- mixture
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 230000003111 delayed effect Effects 0.000 title claims 2
- 239000003814 drug Substances 0.000 claims description 56
- 229920000642 polymer Polymers 0.000 claims description 52
- 229940079593 drug Drugs 0.000 claims description 44
- 239000000126 substance Substances 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 32
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 26
- JYGXADMDTFJGBT-VWUMJDOOSA-N hydrocortisone Chemical compound O=C1CC[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 JYGXADMDTFJGBT-VWUMJDOOSA-N 0.000 claims description 18
- 239000011780 sodium chloride Substances 0.000 claims description 13
- 229960000890 hydrocortisone Drugs 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- XQFRJNBWHJMXHO-RRKCRQDMSA-N IDUR Chemical compound C1[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)NC(=O)C(I)=C1 XQFRJNBWHJMXHO-RRKCRQDMSA-N 0.000 claims description 4
- 229960004716 idoxuridine Drugs 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 21
- 238000012377 drug delivery Methods 0.000 claims 7
- 238000009792 diffusion process Methods 0.000 claims 6
- 239000011159 matrix material Substances 0.000 claims 6
- 230000003204 osmotic effect Effects 0.000 claims 6
- 239000007787 solid Substances 0.000 claims 6
- 238000011065 in-situ storage Methods 0.000 claims 4
- 230000035699 permeability Effects 0.000 claims 4
- 238000002560 therapeutic procedure Methods 0.000 claims 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims 3
- 239000012736 aqueous medium Substances 0.000 claims 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims 3
- 239000008103 glucose Substances 0.000 claims 3
- 239000011148 porous material Substances 0.000 claims 3
- 229940124597 therapeutic agent Drugs 0.000 claims 3
- 230000001225 therapeutic effect Effects 0.000 claims 3
- 206010012186 Delayed delivery Diseases 0.000 claims 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 2
- 239000013543 active substance Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims 2
- 239000002609 medium Substances 0.000 claims 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims 2
- 150000003431 steroids Chemical class 0.000 claims 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- -1 B. for contraception Chemical class 0.000 claims 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 claims 1
- 229930195725 Mannitol Natural products 0.000 claims 1
- 241001465754 Metazoa Species 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims 1
- 208000018737 Parkinson disease Diseases 0.000 claims 1
- 229920012485 Plasticized Polyvinyl chloride Polymers 0.000 claims 1
- MUPFEKGTMRGPLJ-RMMQSMQOSA-N Raffinose Natural products O(C[C@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@@H](O[C@@]2(CO)[C@H](O)[C@@H](O)[C@@H](CO)O2)O1)[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 MUPFEKGTMRGPLJ-RMMQSMQOSA-N 0.000 claims 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 1
- 239000000150 Sympathomimetic Substances 0.000 claims 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims 1
- MUPFEKGTMRGPLJ-UHFFFAOYSA-N UNPD196149 Natural products OC1C(O)C(CO)OC1(CO)OC1C(O)C(O)C(O)C(COC2C(C(O)C(O)C(CO)O2)O)O1 MUPFEKGTMRGPLJ-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 239000003732 agents acting on the eye Substances 0.000 claims 1
- 150000005215 alkyl ethers Chemical class 0.000 claims 1
- 239000002260 anti-inflammatory agent Substances 0.000 claims 1
- 229940121363 anti-inflammatory agent Drugs 0.000 claims 1
- 230000001754 anti-pyretic effect Effects 0.000 claims 1
- 229940125681 anticonvulsant agent Drugs 0.000 claims 1
- 239000001961 anticonvulsive agent Substances 0.000 claims 1
- 239000002220 antihypertensive agent Substances 0.000 claims 1
- 229940030600 antihypertensive agent Drugs 0.000 claims 1
- 239000004599 antimicrobial Substances 0.000 claims 1
- 229940125687 antiparasitic agent Drugs 0.000 claims 1
- 239000003096 antiparasitic agent Substances 0.000 claims 1
- 239000002221 antipyretic Substances 0.000 claims 1
- 229940125716 antipyretic agent Drugs 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 230000009172 bursting Effects 0.000 claims 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 claims 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 claims 1
- MKJXYGKVIBWPFZ-UHFFFAOYSA-L calcium lactate Chemical compound [Ca+2].CC(O)C([O-])=O.CC(O)C([O-])=O MKJXYGKVIBWPFZ-UHFFFAOYSA-L 0.000 claims 1
- 239000001527 calcium lactate Substances 0.000 claims 1
- 229960002401 calcium lactate Drugs 0.000 claims 1
- 235000011086 calcium lactate Nutrition 0.000 claims 1
- 150000001720 carbohydrates Chemical class 0.000 claims 1
- 235000014633 carbohydrates Nutrition 0.000 claims 1
- 239000002327 cardiovascular agent Substances 0.000 claims 1
- 229940125692 cardiovascular agent Drugs 0.000 claims 1
- 229920002301 cellulose acetate Polymers 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 210000000795 conjunctiva Anatomy 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000005474 detonation Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 239000002934 diuretic Substances 0.000 claims 1
- 229940030606 diuretics Drugs 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 claims 1
- 230000001076 estrogenic effect Effects 0.000 claims 1
- 239000012847 fine chemical Substances 0.000 claims 1
- 239000010419 fine particle Substances 0.000 claims 1
- 210000001035 gastrointestinal tract Anatomy 0.000 claims 1
- 239000005556 hormone Substances 0.000 claims 1
- 229940088597 hormone Drugs 0.000 claims 1
- 239000003326 hypnotic agent Substances 0.000 claims 1
- 230000000147 hypnotic effect Effects 0.000 claims 1
- 150000002484 inorganic compounds Chemical class 0.000 claims 1
- 229910017053 inorganic salt Inorganic materials 0.000 claims 1
- 239000008101 lactose Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 claims 1
- 239000003589 local anesthetic agent Substances 0.000 claims 1
- 229960005015 local anesthetics Drugs 0.000 claims 1
- 229910001629 magnesium chloride Inorganic materials 0.000 claims 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims 1
- 235000019341 magnesium sulphate Nutrition 0.000 claims 1
- 239000000594 mannitol Substances 0.000 claims 1
- 235000010355 mannitol Nutrition 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 229940035363 muscle relaxants Drugs 0.000 claims 1
- 239000003158 myorelaxant agent Substances 0.000 claims 1
- 231100000252 nontoxic Toxicity 0.000 claims 1
- 230000003000 nontoxic effect Effects 0.000 claims 1
- 229940125702 ophthalmic agent Drugs 0.000 claims 1
- 150000002894 organic compounds Chemical class 0.000 claims 1
- 229940094443 oxytocics prostaglandins Drugs 0.000 claims 1
- 230000000704 physical effect Effects 0.000 claims 1
- 239000000049 pigment Substances 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 229920002620 polyvinyl fluoride Polymers 0.000 claims 1
- 229910000160 potassium phosphate Inorganic materials 0.000 claims 1
- 235000011009 potassium phosphates Nutrition 0.000 claims 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims 1
- 229910052939 potassium sulfate Inorganic materials 0.000 claims 1
- 235000011151 potassium sulphates Nutrition 0.000 claims 1
- 230000000757 progestagenic effect Effects 0.000 claims 1
- 150000003180 prostaglandins Chemical class 0.000 claims 1
- MUPFEKGTMRGPLJ-ZQSKZDJDSA-N raffinose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO[C@@H]2[C@@H]([C@@H](O)[C@@H](O)[C@@H](CO)O2)O)O1 MUPFEKGTMRGPLJ-ZQSKZDJDSA-N 0.000 claims 1
- 239000012047 saturated solution Substances 0.000 claims 1
- 229940125723 sedative agent Drugs 0.000 claims 1
- 239000000932 sedative agent Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 229910000029 sodium carbonate Inorganic materials 0.000 claims 1
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 1
- 235000011152 sodium sulphate Nutrition 0.000 claims 1
- 235000010265 sodium sulphite Nutrition 0.000 claims 1
- 239000000600 sorbitol Substances 0.000 claims 1
- 230000002048 spasmolytic effect Effects 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 239000000021 stimulant Substances 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 claims 1
- 230000001975 sympathomimetic effect Effects 0.000 claims 1
- 229940064707 sympathomimetics Drugs 0.000 claims 1
- 230000009885 systemic effect Effects 0.000 claims 1
- 235000002906 tartaric acid Nutrition 0.000 claims 1
- 239000011975 tartaric acid Substances 0.000 claims 1
- IMCGHZIGRANKHV-AJNGGQMLSA-N tert-butyl (3s,5s)-2-oxo-5-[(2s,4s)-5-oxo-4-propan-2-yloxolan-2-yl]-3-propan-2-ylpyrrolidine-1-carboxylate Chemical compound O1C(=O)[C@H](C(C)C)C[C@H]1[C@H]1N(C(=O)OC(C)(C)C)C(=O)[C@H](C(C)C)C1 IMCGHZIGRANKHV-AJNGGQMLSA-N 0.000 claims 1
- OKUCEQDKBKYEJY-UHFFFAOYSA-N tert-butyl 3-(methylamino)pyrrolidine-1-carboxylate Chemical compound CNC1CCN(C(=O)OC(C)(C)C)C1 OKUCEQDKBKYEJY-UHFFFAOYSA-N 0.000 claims 1
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 claims 1
- 210000001519 tissue Anatomy 0.000 claims 1
- 239000003204 tranquilizing agent Substances 0.000 claims 1
- 230000002936 tranquilizing effect Effects 0.000 claims 1
- 210000004291 uterus Anatomy 0.000 claims 1
- 210000001215 vagina Anatomy 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 229920003345 Elvax® Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0002—Galenical forms characterised by the drug release technique; Application systems commanded by energy
- A61K9/0004—Osmotic delivery systems; Sustained release driven by osmosis, thermal energy or gas
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59979575A | 1975-07-28 | 1975-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH623232A5 true CH623232A5 (en) | 1981-05-29 |
Family
ID=24401120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH967576A CH623232A5 (en) | 1975-07-28 | 1976-07-28 | Device for delayed pharmaceutical release and process for its production |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5215810A (enrdf_load_html_response) |
| CA (1) | CA1083041A (enrdf_load_html_response) |
| CH (1) | CH623232A5 (enrdf_load_html_response) |
| DE (1) | DE2633987A1 (enrdf_load_html_response) |
| FR (1) | FR2319380A1 (enrdf_load_html_response) |
| GB (1) | GB1503116A (enrdf_load_html_response) |
| IT (1) | IT1069521B (enrdf_load_html_response) |
| SE (1) | SE7608161L (enrdf_load_html_response) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2048710B (en) * | 1979-05-07 | 1983-03-09 | Alza Corp | Osmotically driven fluid dispenser |
| GB2109237B (en) * | 1981-11-18 | 1985-12-18 | Standard Telephones Cables Ltd | Composite materials |
| JPS60139222U (ja) * | 1984-02-28 | 1985-09-14 | 株式会社東芝 | 折りたたみ式記録計 |
| DE19537090A1 (de) * | 1995-10-05 | 1997-04-10 | Lohmann Therapie Syst Lts | Osmotische Vorrichtung zur kontinuierlichen Freisetzung von Wirkstoffen in die Flüssigkeiten des Gastrointestinaltraktes |
| ZA97976B (en) * | 1996-04-05 | 1997-08-18 | Alza Corp | Uniform drug delivery theraphy. |
| US6096339A (en) * | 1997-04-04 | 2000-08-01 | Alza Corporation | Dosage form, process of making and using same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3892842A (en) * | 1971-09-01 | 1975-07-01 | Alza Corp | Intrauterine contraceptive device for releasing steroid having double bond functionality |
| GB1425550A (en) * | 1973-04-25 | 1976-02-18 | Alza Corp | Device for releasing active agent and process for producing the same |
-
1976
- 1976-07-06 GB GB2809376A patent/GB1503116A/en not_active Expired
- 1976-07-16 SE SE7608161A patent/SE7608161L/ not_active Application Discontinuation
- 1976-07-20 CA CA257,322A patent/CA1083041A/en not_active Expired
- 1976-07-27 FR FR7622829A patent/FR2319380A1/fr active Granted
- 1976-07-27 JP JP8960076A patent/JPS5215810A/ja active Pending
- 1976-07-27 IT IT6887676A patent/IT1069521B/it active
- 1976-07-28 CH CH967576A patent/CH623232A5/de not_active IP Right Cessation
- 1976-07-28 DE DE19762633987 patent/DE2633987A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| IT1069521B (it) | 1985-03-25 |
| JPS5215810A (en) | 1977-02-05 |
| CA1083041A (en) | 1980-08-05 |
| SE7608161L (sv) | 1977-01-29 |
| FR2319380B1 (enrdf_load_html_response) | 1978-11-17 |
| GB1503116A (en) | 1978-03-08 |
| FR2319380A1 (fr) | 1977-02-25 |
| DE2633987A1 (de) | 1977-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |