FR775220A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Portable device for direct viewing of films
Assignee: John Albert Chappuis
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Filing: 1933-09-18
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Granted: 1934-12-21
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Expires: 1953-09-18
Abstract
No abstract record available.
Inventors
- 👤 John Albert Chappuis
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 22:12
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22
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References Cited (Backward Citations)
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