CA1045977A - Biodegradable, implantable drug delivery device, and process for preparing and using the same - Google Patents
Biodegradable, implantable drug delivery device, and process for preparing and using the sameInfo
- Publication number
- CA1045977A CA1045977A CA199,552A CA199552A CA1045977A CA 1045977 A CA1045977 A CA 1045977A CA 199552 A CA199552 A CA 199552A CA 1045977 A CA1045977 A CA 1045977A
- Authority
- CA
- Canada
- Prior art keywords
- poly
- accordance
- implant device
- amino acid
- substance
- 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
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- 235000013922 glutamic acid Nutrition 0.000 description 1
- 229960003711 glyceryl trinitrate Drugs 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 229960002885 histidine Drugs 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229950000801 hydroxyprogesterone caproate Drugs 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- PSGAAPLEWMOORI-PEINSRQWSA-N medroxyprogesterone acetate Chemical compound C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 PSGAAPLEWMOORI-PEINSRQWSA-N 0.000 description 1
- 229960002985 medroxyprogesterone acetate Drugs 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229960004452 methionine Drugs 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000000842 neuromuscular blocking agent Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229920001308 poly(aminoacid) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002643 polyglutamic acid Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 108010055896 polyornithine Proteins 0.000 description 1
- 108010011723 polytryptophan Proteins 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 108010066823 proline dipeptidase Proteins 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 108010017314 prolyl dipeptidase Proteins 0.000 description 1
- 229960001404 quinidine Drugs 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- WPLOVIFNBMNBPD-ATHMIXSHSA-N subtilin Chemical compound CC1SCC(NC2=O)C(=O)NC(CC(N)=O)C(=O)NC(C(=O)NC(CCCCN)C(=O)NC(C(C)CC)C(=O)NC(=C)C(=O)NC(CCCCN)C(O)=O)CSC(C)C2NC(=O)C(CC(C)C)NC(=O)C1NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C1NC(=O)C(=C/C)/NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C2NC(=O)CNC(=O)C3CCCN3C(=O)C(NC(=O)C3NC(=O)C(CC(C)C)NC(=O)C(=C)NC(=O)C(CCC(O)=O)NC(=O)C(NC(=O)C(CCCCN)NC(=O)C(N)CC=4C5=CC=CC=C5NC=4)CSC3)C(C)SC2)C(C)C)C(C)SC1)CC1=CC=CC=C1 WPLOVIFNBMNBPD-ATHMIXSHSA-N 0.000 description 1
- 239000000829 suppository Substances 0.000 description 1
- 238000013269 sustained drug release Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 239000003826 tablet Substances 0.000 description 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 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229960004072 thrombin Drugs 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000003204 tranquilizing agent Substances 0.000 description 1
- 230000002936 tranquilizing effect Effects 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 229960001322 trypsin Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 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
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0024—Solid, semi-solid or solidifying implants, which are implanted or injected in body tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
-
- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/2031—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyethylene oxide, poloxamers
- A61K9/2045—Polyamides; Polyaminoacids, e.g. polylysine
-
- 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
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
- A61M31/002—Devices for releasing a drug at a continuous and controlled rate for a prolonged period of time
-
- 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
- A61K9/0087—Galenical forms not covered by A61K9/02 - A61K9/7023
- A61K9/0092—Hollow drug-filled fibres, tubes of the core-shell type, coated fibres, coated rods, microtubules or nanotubes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Neurosurgery (AREA)
- Dermatology (AREA)
- Anesthesiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Medicinal Preparation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36118273A | 1973-05-17 | 1973-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045977A true CA1045977A (en) | 1979-01-09 |
Family
ID=23420985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA199,552A Expired CA1045977A (en) | 1973-05-17 | 1974-05-10 | Biodegradable, implantable drug delivery device, and process for preparing and using the same |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5040718A (enrdf_load_stackoverflow) |
| CA (1) | CA1045977A (enrdf_load_stackoverflow) |
| CH (1) | CH591255A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2424169A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2287242A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1462958A (enrdf_load_stackoverflow) |
Families Citing this family (74)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5423050B2 (enrdf_load_stackoverflow) * | 1972-04-28 | 1979-08-10 | ||
| JPS4964542A (enrdf_load_stackoverflow) * | 1972-10-25 | 1974-06-22 | ||
| JPS52137559A (en) * | 1976-05-12 | 1977-11-17 | Brother Ind Ltd | Coupling method for component parts |
| DE2856901D2 (de) * | 1977-06-07 | 1980-11-13 | Garching Instrumente | Form of implant medicament and preparation process |
| AR221964A1 (es) * | 1979-09-12 | 1981-03-31 | Lilly Co Eli | Dispositivo para rumiantes |
| GB2077586A (en) * | 1980-06-12 | 1981-12-23 | Standard Telephones Cables Ltd | Sustained-release device |
| JPS57128621A (en) * | 1981-01-30 | 1982-08-10 | Japan Atom Energy Res Inst | Preparation of prolonged release type composite |
| JPS58144314A (ja) * | 1982-02-19 | 1983-08-27 | Japan Atom Energy Res Inst | 徐放性複合体の製造方法 |
| JPS58154509A (ja) * | 1982-03-10 | 1983-09-14 | Japan Atom Energy Res Inst | 徐放性複合体の製造方法 |
| JPS58192817A (ja) * | 1982-05-06 | 1983-11-10 | Nippon Soda Co Ltd | 棒状製剤の製造方法 |
| US5248700A (en) * | 1982-05-14 | 1993-09-28 | Akzo Nv | Active agent containing solid structures for prolonged release of active agents |
| JPS58213708A (ja) * | 1982-06-03 | 1983-12-12 | Mitsui Toatsu Chem Inc | 針状体徐放性成形薬剤の製造方法 |
| JPS58225008A (ja) * | 1982-06-25 | 1983-12-27 | Japan Atom Energy Res Inst | 徐放性複合体の製造方法 |
| JPS5968209A (ja) * | 1982-10-13 | 1984-04-18 | Mikuni Plast Kk | ジヨイント管の製造方法 |
| JPS59135053A (ja) * | 1983-01-20 | 1984-08-03 | 日本特殊陶業株式会社 | 薬液含浸繊維質セラミツクス |
| JPS59139318A (ja) * | 1983-01-31 | 1984-08-10 | Mitsui Toatsu Chem Inc | フイルム状またはシ−ト状の成形薬材の製造方法 |
| JPS60501759A (ja) * | 1983-07-01 | 1985-10-17 | バテル メモリアル インステイチユ−ト | 生物分解性ポリペプチド及び薬剤の緩慢な放出のためのその使用 |
| GB2146531B (en) * | 1983-09-15 | 1987-04-29 | Stc Plc | Controlled release system |
| GB2146524B (en) * | 1983-09-15 | 1987-04-08 | Stc Plc | Differential release system for aqueous media |
| JPS60237015A (ja) * | 1984-05-11 | 1985-11-25 | Koken:Kk | 医薬徐放剤 |
| DE3671375D1 (de) * | 1985-02-19 | 1990-06-28 | Dow Chemical Co | Hartgewebeprothese und verfahren zu ihrer herstellung. |
| DE3533369A1 (de) * | 1985-09-19 | 1987-03-19 | Alois Prof Dr Med Bloemer | Antibioticahaltiges mittel und seine verwendung als chirurgisches kunststoffmaterial |
| CH667874A5 (fr) * | 1985-12-19 | 1988-11-15 | Battelle Memorial Institute | Polypeptide synthetique biodegradable et son utilisation pour la preparation de medicaments. |
| JPS62247554A (ja) * | 1986-04-18 | 1987-10-28 | Ibiden Co Ltd | ピングリツドアレイパツケ−ジ基板 |
| JPS62247555A (ja) * | 1986-04-18 | 1987-10-28 | Ibiden Co Ltd | 半導体素子搭載ピングリットアレイパッケージ基板の製造方法 |
| DE3745075C2 (de) * | 1986-08-18 | 1997-04-30 | Emisphere Tech Inc | Mikroverkapselung für pharmakologische Mittel |
| USRE35862E (en) * | 1986-08-18 | 1998-07-28 | Emisphere Technologies, Inc. | Delivery systems for pharmacological agents encapsulated with proteinoids |
| US4925673A (en) * | 1986-08-18 | 1990-05-15 | Clinical Technologies Associates, Inc. | Delivery systems for pharmacological agents encapsulated with proteinoids |
| AU606383B2 (en) * | 1987-03-06 | 1991-02-07 | Research Triangle Institute | Polymer blends for selective biodegradability |
| FR2618329B1 (fr) * | 1987-07-22 | 1997-03-28 | Dow Corning Sa | Procede de fabrication d'un anneau capable d'assurer la liberation d'un agent therapeutique, et anneau fabrique par ce procede |
| US4894231A (en) * | 1987-07-28 | 1990-01-16 | Biomeasure, Inc. | Therapeutic agent delivery system |
| DE3832162A1 (de) * | 1988-09-22 | 1990-04-12 | Lohmann Therapie Syst Lts | Verfahren zur herstellung von kollagenschaeumen in form endloser baender und verwendung in medizin, kosmetik und hygiene |
| US4976968A (en) * | 1989-02-24 | 1990-12-11 | Clinical Technologies Associates, Inc. | Anhydrous delivery systems for pharmacological agents |
| US4983402A (en) * | 1989-02-24 | 1991-01-08 | Clinical Technologies Associates, Inc. | Orally administerable ANF |
| US5447728A (en) | 1992-06-15 | 1995-09-05 | Emisphere Technologies, Inc. | Desferrioxamine oral delivery system |
| US5578323A (en) | 1992-06-15 | 1996-11-26 | Emisphere Technologies, Inc. | Proteinoid carriers and methods for preparation and use thereof |
| US5629020A (en) | 1994-04-22 | 1997-05-13 | Emisphere Technologies, Inc. | Modified amino acids for drug delivery |
| US5693338A (en) | 1994-09-29 | 1997-12-02 | Emisphere Technologies, Inc. | Diketopiperazine-based delivery systems |
| US6221367B1 (en) | 1992-06-15 | 2001-04-24 | Emisphere Technologies, Inc. | Active agent transport systems |
| US5443841A (en) | 1992-06-15 | 1995-08-22 | Emisphere Technologies, Inc. | Proteinoid microspheres and methods for preparation and use thereof |
| US5714167A (en) | 1992-06-15 | 1998-02-03 | Emisphere Technologies, Inc. | Active agent transport systems |
| US6099856A (en) | 1992-06-15 | 2000-08-08 | Emisphere Technologies, Inc. | Active agent transport systems |
| US6331318B1 (en) | 1994-09-30 | 2001-12-18 | Emisphere Technologies Inc. | Carbon-substituted diketopiperazine delivery systems |
| JPH04163879A (ja) * | 1990-10-26 | 1992-06-09 | Mitsumi Electric Co Ltd | コンタクトピンの固定方法 |
| US5326568A (en) * | 1991-05-03 | 1994-07-05 | Giampapa Vincent C | Method of tissue-specific delivery |
| US5792451A (en) | 1994-03-02 | 1998-08-11 | Emisphere Technologies, Inc. | Oral drug delivery compositions and methods |
| US5811127A (en) | 1992-06-15 | 1998-09-22 | Emisphere Technologies, Inc. | Desferrioxamine oral delivery system |
| US5401516A (en) | 1992-12-21 | 1995-03-28 | Emisphere Technologies, Inc. | Modified hydrolyzed vegetable protein microspheres and methods for preparation and use thereof |
| US5709861A (en) | 1993-04-22 | 1998-01-20 | Emisphere Technologies, Inc. | Compositions for the delivery of antigens |
| US5643957A (en) | 1993-04-22 | 1997-07-01 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5958457A (en) | 1993-04-22 | 1999-09-28 | Emisphere Technologies, Inc. | Compositions for the delivery of antigens |
| EP0696208B1 (en) | 1993-04-22 | 2001-08-22 | Emisphere Technologies, Inc. | Oral drug delivery compositions |
| GB2295316B (en) * | 1994-11-25 | 1997-09-10 | William Leslie Porter | Bolus for supplying biologically beneficial substances to ruminant animals |
| CN1151836C (zh) | 1995-03-31 | 2004-06-02 | 艾米斯菲尔技术有限公司 | 用作传送活性剂的化合物和组合物 |
| US5965121A (en) | 1995-03-31 | 1999-10-12 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5989539A (en) | 1995-03-31 | 1999-11-23 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5650386A (en) | 1995-03-31 | 1997-07-22 | Emisphere Technologies, Inc. | Compositions for oral delivery of active agents |
| US5866536A (en) | 1995-03-31 | 1999-02-02 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US6001347A (en) | 1995-03-31 | 1999-12-14 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5667806A (en) | 1995-06-07 | 1997-09-16 | Emisphere Technologies, Inc. | Spray drying method and apparatus |
| US5750147A (en) | 1995-06-07 | 1998-05-12 | Emisphere Technologies, Inc. | Method of solubilizing and encapsulating itraconazole |
| US6051258A (en) | 1995-06-07 | 2000-04-18 | Emisphere Technologies, Inc. | Proteinoid emulsions and methods for preparation and use thereof |
| DE19608423A1 (de) * | 1996-03-05 | 1997-09-11 | Merck Patent Gmbh | Implantate mit phasenweiser Arzneistoffabgabe |
| JP2000512671A (ja) | 1996-06-14 | 2000-09-26 | エミスフェアー テクノロジーズ インク | マイクロカプセル化香料及び調製方法 |
| US6358504B1 (en) | 1997-02-07 | 2002-03-19 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5879681A (en) | 1997-02-07 | 1999-03-09 | Emisphere Technolgies Inc. | Compounds and compositions for delivering active agents |
| US5939381A (en) | 1997-02-07 | 1999-08-17 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5876710A (en) | 1997-02-07 | 1999-03-02 | Emisphere Technologies Inc. | Compounds and compositions for delivering active agents |
| US5990166A (en) | 1997-02-07 | 1999-11-23 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| US5863944A (en) | 1997-04-30 | 1999-01-26 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
| ATE466603T1 (de) | 1998-04-27 | 2010-05-15 | Surmodics Inc | Bioaktive wirkstoffe freisetzende beschichtungen |
| US7097850B2 (en) | 2002-06-18 | 2006-08-29 | Surmodics, Inc. | Bioactive agent release coating and controlled humidity method |
| US20050220842A1 (en) | 2004-04-06 | 2005-10-06 | Dewitt David M | Coating compositions for bioactive agents |
| WO2013102034A1 (en) | 2011-12-30 | 2013-07-04 | Kibur Medical, Inc. | Implantable devices and methods for the evaluation of active agent |
-
1974
- 1974-05-10 CA CA199,552A patent/CA1045977A/en not_active Expired
- 1974-05-14 GB GB2136174A patent/GB1462958A/en not_active Expired
- 1974-05-16 CH CH674474A patent/CH591255A5/xx not_active IP Right Cessation
- 1974-05-17 JP JP5459574A patent/JPS5040718A/ja active Pending
- 1974-05-17 DE DE19742424169 patent/DE2424169A1/de not_active Withdrawn
- 1974-10-11 FR FR7434307A patent/FR2287242A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5040718A (enrdf_load_stackoverflow) | 1975-04-14 |
| GB1462958A (en) | 1977-01-26 |
| CH591255A5 (enrdf_load_stackoverflow) | 1977-09-15 |
| FR2287242B1 (enrdf_load_stackoverflow) | 1981-06-12 |
| FR2287242A1 (fr) | 1976-05-07 |
| DE2424169A1 (de) | 1974-12-05 |
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