FR771833A
Expired / Lapsed
FR
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Method and device for repeating track signals on a moving train using contacts placed on the track
Assignee: METRUM
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Filing: 1934-04-13
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Granted: 1934-10-18
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Expires: 1954-04-13
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
2026-11-07 20:53
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/10
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