FR1218259A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Electroacoustic transducer
Assignee: Robert Gamzon
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Filing: 1959-03-05
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Granted: 1960-05-10
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Expires: 1979-03-05
Abstract
No abstract record available.
Inventors
- 👤 Robert Gamzon
- 👤 Ephraim Heinrich Frei
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 04:59
CPC Classifications
H; H04; H04R; H04R3/00; H04R3/002; B; B06; B06B; B06B1/00; B06B1/02; B06B1/04; H04R9/00; H04R9/02; H04R9/04; H04R9/046; H04R9/047
Claims Analysis
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References Cited (Backward Citations)
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