FR992048A
Expired / Lapsed
FR
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Electronic amplifier
Assignee: AT&T Inc
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Filing: 1949-08-09
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Granted: 1951-10-12
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Expires: 1969-08-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38; H01J23/00; H01J23/02; H01J23/11
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