FR818980A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method for automatically varying the amplification of one or more electron tubes as a function of variations in illumination
Assignee: Koninklijke Philips NV
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Filing: 1937-03-09
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Granted: 1937-10-07
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Expires: 1957-03-09
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 23:42
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047
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