FR1026069A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Microphone device
Assignee: APP ET D EXPL DES ETABLISSEMEN
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Filing: 1950-10-17
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Granted: 1953-04-23
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Expires: 1970-10-17
Abstract
No abstract record available.
Inventors
- 👤 Maurice Bonnaffous
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 17:18
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/08; H04R1/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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