Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Individual
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Individual
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Priority to ES58751ApriorityCriticalpatent/ES58751A1/es
Publication of ES58751A1publicationCriticalpatent/ES58751A1/es
ES58751A1914-07-181914-07-18Un nuevo dispositivo de comunicación telefónica entre trenes en marcha y estaciones u otros puestos fijos.
ExpiredES58751A1
(es)