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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SAfiledCriticalAlcatel Espana SA
Priority to ES0244567ApriorityCriticalpatent/ES244567A1/es
Publication of ES244567A1publicationCriticalpatent/ES244567A1/es
Sistema de transmisión de señales para centrales y aparatos telefónicos automáticos para transmisión sobre una línea a dos hilos, en el que cada señal consiste en elementos de señal situados dentro y fuera del margen de transmisión telefónica normal.
ES0244567A1958-10-091958-10-09Sistema de transmisiën de senales para centrales y aparatos telefënicos automaticos
ExpiredES244567A1
(es)