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FR878209A Expired / Lapsed FR ⏱️ 0.0 years remaining

Powerline multiplex transmission system

Assignee: Lignes Telegraphiques et Telephoniques LTT SA
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Filing: 1941-12-31
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Granted: 1943-01-14
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Expires: 1961-12-31
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Abstract

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Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-05 23:11
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/04; H04J1/045

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