FR728644A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa
Assignee: Edgar-Pierre Tawil
•
Filing: 1931-12-19
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Granted: 1932-07-08
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Expires: 1951-12-19
Abstract
No abstract record available.
Inventors
- 👤 Edgar-Pierre Tawil
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 16:41
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04
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