FR1240347A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Hearing aid against deafness
Assignee: ARDENTE ACOUSTIC LAB Ltd
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Filing: 1959-11-12
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Granted: 1960-09-02
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Expires: 1979-11-12
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 21:19
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06; H; H04; H04R; H04R25/00; H04R25/60; H04R25/603; H04R25/609; H04R2225/00; H04R2225/021; H04R2225/57
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