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FR857437A
Expired / Lapsed
FR
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Improvements to negative feedback amplifiers
Assignee: Lignes Telegraphiques et Telephoniques LTT SA
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Filing: 1939-07-06
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Granted: 1940-09-12
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Expires: 1959-07-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36
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