FR871876A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
illuminated screen with triple mirrors
Assignee: Ullmann & Pochmann Soc
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Filing: 1941-05-03
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Granted: 1942-05-20
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Expires: 1961-05-03
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-24 00:57
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60
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