FR1047892A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Electrical communication device
Assignee: AT&T Inc
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Filing: 1951-07-12
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Granted: 1953-12-17
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Expires: 1971-07-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 03:56
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/10; H04B; H04B1/00; H04B1/62; H04B1/64; H04B7/00; H04B7/14; H04B7/15; H04B7/155; H04B7/15528; H04B7/15564
Claims Analysis
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References Cited (Backward Citations)
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