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Compagnie Generale de Signalisation
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Compagnie Generale de Signalisation
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Publication of FR30201EpublicationCriticalpatent/FR30201E/fr
H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
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FR30201D1924-10-231924-10-23Perfectionnements dans les systèmes de signalisation électrique pour chemins de fer et analogues
ExpiredFR30201E
(fr)