Patent FR521654A successfully refreshed from Google Patents.
Patent FR866058A successfully refreshed from Google Patents.
FR866058A
Expired / Lapsed
FR
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Improvements to electronic tubes
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1940-02-28
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Granted: 1941-06-16
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Expires: 1960-02-28
Abstract
No abstract record available.
Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 01:47
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34
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