FR676429A
Expired / Lapsed
FR
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Further development of devices used for recording and reproducing sounds, known as phonographs
Assignee: Martial Potay
•
Filing: 1929-06-10
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Granted: 1930-02-22
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Expires: 1949-06-10
Abstract
No abstract record available.
Inventors
- 👤 Martial Potay
- 👤 Michel Potay
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 09:06
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
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