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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Electric Co
Original Assignee
Automatic Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Automatic Electric CofiledCriticalAutomatic Electric Co
Priority to ES71773ApriorityCriticalpatent/ES71773A1/es
Publication of ES71773A1publicationCriticalpatent/ES71773A1/es
ES71773A1919-12-181919-12-18Un sistema perfeccionado de conmutadores selectores para líneas o redes telefónicas automáticas y sus similares.
ExpiredES71773A1
(es)
Conmutadores de gran capacidad de sistema perfeccionado, y dispositivos para señalar los números de abonados en las redes o líneas telefónicas automáticas y sus similares.