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PIERRE LEROY EMILE MARCEL
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PIERRE LEROY EMILE MARCEL
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Publication of ES224559A2publicationCriticalpatent/ES224559A2/es
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining
(AREA)
Abstract
Mejoras introducidas en el objeto de la patente principal nº 223764, por procedimiento de mando de señalización, especialmente para ferrocarriles y dispositivo para su realización, caracterizadas por las particularidades siguientes consideradas separadamente o en combinación.
ES0224559A1955-04-261955-10-20UN PROCEDIMIENTO DE MANDO DE SENALIZACIoN, ESPECIALMENTE PARA FERROCARRILES, Y DISPOSITIVO PARA SU REALIZACIoN
ExpiredES224559A2
(es)