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FR560283A
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Sound-producing device
Assignee: Harry Caldwell Heath
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Filing: 1922-11-29
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Granted: 1923-10-02
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Expires: 1942-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harry Caldwell Heath
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 16:55
CPC Classifications
G; G10; G10K; G10K7/00; G10K7/02; G10K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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