FR777946A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
sophisticated micro-telephone equipment, for use by airmen in particular
Assignee: SIF Societe Independante de Telegraphie Sans Fil
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Filing: 1933-11-22
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Granted: 1935-03-05
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Expires: 1953-11-22
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 06:05
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/05
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