FR1098731A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Further training in deafness devices
Assignee: Raoul Franck-Vidal
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Filing: 1954-01-28
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Granted: 1955-08-18
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Expires: 1974-01-28
Abstract
No abstract record available.
Inventors
- 👤 Raoul Franck-Vidal
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/14; G02C5/143; G02C11/00; G02C11/06; G02C5/20
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