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FR523399A
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Improvement in electro-magnetic clocks
Assignee: CHARLES-JEAN-VICTOR FERY
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Filing: 1920-01-08
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Granted: 1921-08-17
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Expires: 1940-01-08
Abstract
No abstract record available.
Inventors
- 👤 Charles-Jean-Victor Fery
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 17:58
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/02; G04C3/027
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References Cited (Backward Citations)
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