FR1152433A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Speaker training
Assignee: Paul Bouyer
•
Filing: 1956-06-20
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Granted: 1958-02-17
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Paul Bouyer
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 15:24
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/021
Claims Analysis
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References Cited (Backward Citations)
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