FR558207A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
New method of phonographic recording and reproduction
Assignee: Individual
•
Filing: 1922-11-02
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Granted: 1923-08-23
•
Expires: 1942-11-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 09:37
CPC Classifications
G; G11; G11B; G11B3/00
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