FR30070E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Vibrating membrane for telephone devices
Assignee: Albert Mathot
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Filing: 1925-02-02
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Granted: 1926-01-26
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Expires: 1945-02-02
Abstract
No abstract record available.
Inventors
- 👤 Albert Mathot
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 12:35
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/06; H04R11/00
Claims Analysis
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References Cited (Backward Citations)
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