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FR577307A
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FR
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Improvements in duplex radiocommunications
Assignee: SIF Societe Independante de Telegraphie Sans Fil
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Filing: 1924-02-19
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Granted: 1924-09-03
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Expires: 1944-02-19
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 17:11
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/50
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