FR25013E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Electric device operating an air turbine, a shutter and a circuit breaker, allowing fixed projection with cinematographic films whatever the heat intensity of the light source and obtaining the non-flammability of the films, whatever the duration of their exposure in front of the light source
Assignee: Virgilio Gionne
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Filing: 1921-01-03
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Granted: 1922-12-14
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Expires: 1941-01-03
Abstract
No abstract record available.
Inventors
- 👤 Virgilio Gionne
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/16
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