FR855848A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device allowing the blind to perceive light sources by touch
Assignee: Rene Jean Jeudon
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Filing: 1939-02-04
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Granted: 1940-05-21
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Expires: 1959-02-04
Abstract
No abstract record available.
Inventors
- 👤 Rene Jean Jeudon
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
G; G09; G09B; G09B21/00; G09B21/001; G09B21/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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