FR520784A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for photographing colors visible by reflection on paper and all media
Assignee: Individual
•
Filing: 1917-11-30
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Granted: 1921-06-30
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Expires: 1937-11-30
Abstract
No abstract record available.
Inventors
- 👤 Louis Dufay
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 20:07
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/04
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References Cited (Backward Citations)
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