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
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Filing date
Publication date
Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Publication of ES182449A1publicationCriticalpatent/ES182449A1/es
Mejoras en los sistemas telefónicos automáticos, que consiste en el empleo en los equipos empleados para la llamada de un hilo de discriminación, cuyo estado eléctrico es diferente según la clase de línea sobre la cual se ha recibido la llamada.
ES0182449A1946-04-271948-02-18MEJORAS EN SISTEMAS TELEFoNICOS
ExpiredES182449A1
(es)