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FR774029A
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Improvements to automatic disc brushes of talking machines
Assignee: Rivron Louis Pierre
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Filing: 1934-06-01
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Granted: 1934-11-29
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Expires: 1954-06-01
Abstract
No abstract record available.
Inventors
- 👤 Rivron Louis Pierre
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 17:53
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/58; G11B3/5809; G11B3/5818; G11B3/5827; G11B3/5836
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