FR792590A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Electrical resistance with negative temperature coefflcient, made from a concrete mixture
Assignee: Osa Participations Industrielles SA
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Filing: 1935-07-12
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Granted: 1936-01-06
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Expires: 1955-07-12
Abstract
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Bibliographic Details
Application Number
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Jurisdiction
FR
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google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043
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