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1970-09-16 |
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Improvements in or relating to stethoscopes
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1966-10-31 |
1970-09-29 |
Michael S Demaree |
Method and apparatus for the testing and treatment of hearing deficiencies
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1967-11-14 |
1970-09-03 |
Michel Copel |
Verfahren und Schaltungsanordnung zum Verbessern der Verstaendlichkeit frequenzverzerrter Sprache
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1976-03-29 |
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Siemens AG, 1000 Berlin und 8000 München |
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Beltone Electronics Corporation |
Hearing aid with controllable wide range of frequency response
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Navot Technology Ltd |
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Direct contact hearing aid apparatus
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Matsushita Electric Industrial Co., Ltd. |
Générateur de son à tonalité basse
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1986-05-23 |
1988-08-26 |
Franche Comte Universite |
Perfectionnements aux dispositifs de prothese auditive
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Hearing aid with programmable remote and method of deriving settings for configuring the hearing aid
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Method and apparatus for directional acoustic fitting of hearing aids
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Hearing aids configured for directional acoustic fitting
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Siemens Medical Instruments Pte. Ltd. |
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