Patent FR783450A successfully refreshed from Google Patents.
FR783450A
Expired / Lapsed
FR
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Device for writing in the dark
Assignee: Theophane Venien
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Filing: 1934-12-29
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Granted: 1935-07-12
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Expires: 1954-12-29
Abstract
No abstract record available.
Inventors
- 👤 Theophane Venien
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 19:09
CPC Classifications
B; B42; B42D; B42D5/00; B42D5/003; B42D5/005; B42D5/006; B42D5/007
Claims Analysis
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References Cited (Backward Citations)
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