FR852829A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device for reducing the light rays emitted by a dazzling source
Assignee: Henri Fernand Defrance
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Filing: 1939-04-07
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Granted: 1940-03-04
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Expires: 1959-04-07
Abstract
No abstract record available.
Inventors
- 👤 Henri Fernand Defrance
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-07 10:19
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/16
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