SE440023C - Oeronproppskonstruktion samt foerfarande foer dess framstaellning - Google Patents
Oeronproppskonstruktion samt foerfarande foer dess framstaellningInfo
- Publication number
- SE440023C SE440023C SE7903335A SE7903335A SE440023C SE 440023 C SE440023 C SE 440023C SE 7903335 A SE7903335 A SE 7903335A SE 7903335 A SE7903335 A SE 7903335A SE 440023 C SE440023 C SE 440023C
- Authority
- SE
- Sweden
- Prior art keywords
- earplug
- earplugs
- flexible
- wire
- wooden
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/69—General aspects of joining filaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A61F11/10—Protective devices for the ears internal, e.g. earplugs inflatable or expandable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A61F11/12—External mounting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/526—Joining bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
- B29K2001/08—Cellulose derivatives
- B29K2001/12—Cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Otolaryngology (AREA)
- Psychology (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Acoustics & Sound (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/900,982 US4193396A (en) | 1978-04-28 | 1978-04-28 | Paired earplug construction |
Publications (3)
Publication Number | Publication Date |
---|---|
SE7903335L SE7903335L (sv) | 1979-10-29 |
SE440023B SE440023B (sv) | 1985-07-15 |
SE440023C true SE440023C (sv) | 1988-11-08 |
Family
ID=25413405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7903335A SE440023C (sv) | 1978-04-28 | 1979-04-17 | Oeronproppskonstruktion samt foerfarande foer dess framstaellning |
Country Status (18)
Country | Link |
---|---|
US (1) | US4193396A (xx) |
JP (1) | JPS54144099A (xx) |
AU (1) | AU527321B2 (xx) |
BE (1) | BE875941A (xx) |
CA (1) | CA1117870A (xx) |
CH (1) | CH629955A5 (xx) |
DD (1) | DD143208A5 (xx) |
DE (1) | DE2915832C2 (xx) |
DK (1) | DK156812C (xx) |
FR (1) | FR2424020A1 (xx) |
GB (1) | GB2019224B (xx) |
HK (1) | HK16284A (xx) |
IT (2) | IT1118590B (xx) |
MX (1) | MX146059A (xx) |
NL (1) | NL185059C (xx) |
NO (2) | NO148056C (xx) |
SE (1) | SE440023C (xx) |
ZA (1) | ZA79910B (xx) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2506482A1 (fr) * | 1981-05-19 | 1982-11-26 | Bada Alain | Sceau en matiere plastique et son procede de fabrication |
US4724922A (en) * | 1986-07-24 | 1988-02-16 | Kalayjian Robert W | Acoustic earpiece |
US4916758A (en) * | 1988-07-01 | 1990-04-17 | Jordan Ross Erma | Disposable full ear protector for beautician use |
US4896679A (en) * | 1989-05-22 | 1990-01-30 | St Pierre Carol L | Method and apparatus for the exclusion of sound and water from the auditory canal |
US5203352A (en) * | 1990-10-16 | 1993-04-20 | Cabot Safety Corporation | Polymeric foam earplug |
US5153387A (en) * | 1990-12-31 | 1992-10-06 | Syracuse University | Layered earplug |
JPH0568654A (ja) * | 1991-09-12 | 1993-03-23 | Hideki Fukuzaki | 枚葉状シートからなる連接取出し用シート |
US5601594A (en) * | 1995-09-14 | 1997-02-11 | Best; Barry D. | Nasal stent |
US5668354A (en) * | 1995-11-02 | 1997-09-16 | Cabot Safety Intermediate Corporation | Earplug assembly and eyewear assembly |
US5809574A (en) * | 1996-08-15 | 1998-09-22 | Cabot Safety Intermediate Corporation | Hearing protection device |
US5833367A (en) * | 1996-11-12 | 1998-11-10 | Trutek, Inc. | Tympanic thermometer probe cover |
US6030117A (en) * | 1996-11-12 | 2000-02-29 | Trutek, Inc. | Tympanic thermometer probe cover |
US5749373A (en) * | 1997-04-10 | 1998-05-12 | Moldex-Metric, Inc. | Headband with break-away cord attachment |
US6001066A (en) * | 1997-06-03 | 1999-12-14 | Trutek, Inc. | Tympanic thermometer with modular sensing probe |
USD406341S (en) * | 1997-07-24 | 1999-03-02 | Stefano James M | Tongue cleaner |
US6134333A (en) * | 1998-03-17 | 2000-10-17 | Sonic Innovations, Inc. | Disposable oleophobic and hydrophobic barrier for a hearing aid |
US5967992A (en) * | 1998-06-03 | 1999-10-19 | Trutex, Inc. | Radiometric temperature measurement based on empirical measurements and linear functions |
US6105713A (en) * | 1998-09-17 | 2000-08-22 | Sonic Innovations, Inc. | Cover movable by rotation forming a cerumen barrier in a hearing aid |
USD409743S (en) * | 1998-10-28 | 1999-05-11 | Cabot Safety Intermediate Corporation | Hearing protection device |
US6123454A (en) * | 1999-06-11 | 2000-09-26 | Trutek, Inc. | Tympanic thermometer disposable probe cover with further stretching prevention structure |
US6440339B1 (en) * | 1999-10-14 | 2002-08-27 | Moldex -Metric, Inc. | Method of making a corded earplug |
US6453476B1 (en) | 2000-09-27 | 2002-09-24 | Team Wendy, Llc | Protective helmet |
US6568394B2 (en) | 2000-10-13 | 2003-05-27 | Cabot Safety Intermediate Corporation | Flanged earplug |
US6622816B2 (en) | 2001-04-24 | 2003-09-23 | Cabot Safety Intermediate Corp. | Personal protective devices having an energy activated material |
US20030144588A1 (en) * | 2002-01-31 | 2003-07-31 | Eva Zinreich | Insertable fat suppression enhancer for use with magnetic resonance imaging |
US8708091B2 (en) * | 2002-10-28 | 2014-04-29 | 3M Innovative Properties Company | Corded hearing protective device and method of manufacturing the same |
US7510046B2 (en) | 2005-10-10 | 2009-03-31 | Cabot Safety Intermediate Corporation | Low attenuating push-in earplug with integral handle |
US7984716B2 (en) * | 2007-06-22 | 2011-07-26 | Kimberly-Clark Worldwide Inc. | Self-conforming sound attenuation earplug |
US8113207B2 (en) * | 2008-08-22 | 2012-02-14 | Kimberly-Clark Worldwide, Inc. | Self-conforming sound attenuation earplug |
US9763832B2 (en) * | 2013-04-10 | 2017-09-19 | Howard S. Leight | Pull out earplug |
JP6184295B2 (ja) * | 2013-10-29 | 2017-08-23 | リオン株式会社 | 耳穴型補聴器 |
USD733676S1 (en) | 2013-11-18 | 2015-07-07 | 3M Innovative Properties Company | Hearing device tether acoustic decoupling section |
US9445177B2 (en) | 2013-11-18 | 2016-09-13 | 3M Innovative Properties Company | Hearing device tether with acoustic decoupling section |
US11937998B2 (en) | 2016-04-01 | 2024-03-26 | 3M Innovative Properties Company | Hearing protection device and method of forming same |
US10728644B2 (en) * | 2016-09-11 | 2020-07-28 | Spigen Korea Co., Ltd. | Holding strap for wireless ear-bud style earpieces having a stem |
BR112020004180A2 (pt) * | 2017-09-01 | 2020-09-08 | 3M Innovative Properties Company | cordão de copolímero de poliolefina estirado a frio para protetor de ouvido |
USD895901S1 (en) | 2017-09-01 | 2020-09-08 | 3M Innovative Properties Company | Hearing protector |
JP7273798B2 (ja) | 2017-09-01 | 2023-05-15 | スリーエム イノベイティブ プロパティズ カンパニー | 先端キャビティを有する押し嵌め式耳栓 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US955276A (en) * | 1909-03-22 | 1910-04-19 | John Lopizich | Ear-plug for bathers. |
US2230738A (en) * | 1939-10-27 | 1941-02-04 | Baum Edward | Eardrum protector |
GB733542A (en) * | 1953-10-16 | 1955-07-13 | Gustav Vilhelm Israel Hultgren | Improvements relating to ear protectors |
GB1252940A (xx) * | 1967-11-20 | 1971-11-10 | ||
US3625787A (en) * | 1969-08-11 | 1971-12-07 | Kimberly Clark Co | Method of attaching withdrawal string to a sponge tampon |
US3736935A (en) * | 1971-02-17 | 1973-06-05 | Codman & Shurtleff | Surgical sponge |
US3811437A (en) * | 1971-10-26 | 1974-05-21 | Cabot Corp | Earplugs |
DE2325823A1 (de) * | 1973-05-22 | 1974-12-19 | Envac Ets | Gehoerschutz |
JPS5314113B2 (xx) * | 1973-07-04 | 1978-05-15 | ||
SE399178C (sv) * | 1974-09-06 | 1988-03-03 | Carl Curt Asker Lambert | Horselskyddspropp |
-
1978
- 1978-04-28 US US05/900,982 patent/US4193396A/en not_active Expired - Lifetime
-
1979
- 1979-02-26 ZA ZA79910A patent/ZA79910B/xx unknown
- 1979-02-28 MX MX176755A patent/MX146059A/es unknown
- 1979-04-06 GB GB7912179A patent/GB2019224B/en not_active Expired
- 1979-04-11 CA CA000325389A patent/CA1117870A/en not_active Expired
- 1979-04-17 SE SE7903335A patent/SE440023C/sv not_active IP Right Cessation
- 1979-04-19 DE DE2915832A patent/DE2915832C2/de not_active Expired
- 1979-04-20 NL NLAANVRAGE7903127,A patent/NL185059C/xx not_active IP Right Cessation
- 1979-04-20 JP JP4889479A patent/JPS54144099A/ja active Granted
- 1979-04-20 CH CH375379A patent/CH629955A5/fr not_active IP Right Cessation
- 1979-04-23 IT IT67847/79A patent/IT1118590B/it active
- 1979-04-23 IT IT7953198U patent/IT7953198V0/it unknown
- 1979-04-23 DD DD79212423A patent/DD143208A5/de not_active IP Right Cessation
- 1979-04-27 NO NO791411A patent/NO148056C/no unknown
- 1979-04-27 AU AU46554/79A patent/AU527321B2/en not_active Expired
- 1979-04-27 BE BE0/194910A patent/BE875941A/xx not_active IP Right Cessation
- 1979-04-27 DK DK174879A patent/DK156812C/da not_active IP Right Cessation
- 1979-04-27 FR FR7910765A patent/FR2424020A1/fr active Granted
-
1982
- 1982-09-06 NO NO823007A patent/NO823007L/no unknown
-
1984
- 1984-02-23 HK HK162/84A patent/HK16284A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ZA79910B (en) | 1980-02-27 |
DE2915832A1 (de) | 1979-11-08 |
SE7903335L (sv) | 1979-10-29 |
NO823007L (no) | 1979-10-30 |
AU4655479A (en) | 1979-11-01 |
GB2019224B (en) | 1982-11-03 |
GB2019224A (en) | 1979-10-31 |
DK156812C (da) | 1990-02-26 |
BE875941A (fr) | 1979-08-16 |
IT1118590B (it) | 1986-03-03 |
FR2424020B1 (xx) | 1985-04-19 |
SE440023B (sv) | 1985-07-15 |
AU527321B2 (en) | 1983-02-24 |
NL185059B (nl) | 1989-08-16 |
DE2915832C2 (de) | 1985-03-28 |
NO148056B (no) | 1983-04-25 |
CA1117870A (en) | 1982-02-09 |
IT7967847A0 (it) | 1979-04-23 |
DK156812B (da) | 1989-10-09 |
DK174879A (da) | 1979-10-29 |
US4193396A (en) | 1980-03-18 |
NO791411L (no) | 1979-10-30 |
NO148056C (no) | 1983-08-03 |
NL185059C (nl) | 1990-01-16 |
JPS6340102B2 (xx) | 1988-08-09 |
MX146059A (es) | 1982-05-07 |
NL7903127A (nl) | 1979-10-30 |
IT7953198V0 (it) | 1979-04-23 |
FR2424020A1 (fr) | 1979-11-23 |
CH629955A5 (fr) | 1982-05-28 |
HK16284A (en) | 1984-03-02 |
JPS54144099A (en) | 1979-11-09 |
DD143208A5 (de) | 1980-08-13 |
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