ES540271A0 - Sistema de deteccion de ocupacion e intercambio de senales en redes de telecomunicacion que utilizan lineas telefonicascompartidas
- Google Patents
Sistema de deteccion de ocupacion e intercambio de senales en redes de telecomunicacion que utilizan lineas telefonicascompartidas
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.)
Telettra Espanola SA
Original Assignee
Telettra Espanola 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 Telettra Espanola SAfiledCriticalTelettra Espanola SA
Priority to ES540271ApriorityCriticalpatent/ES540271A0/es
Publication of ES8603133A1publicationCriticalpatent/ES8603133A1/es
Publication of ES540271A0publicationCriticalpatent/ES540271A0/es
ES540271A1985-02-081985-02-08Sistema de deteccion de ocupacion e intercambio de senales en redes de telecomunicacion que utilizan lineas telefonicascompartidas
GrantedES540271A0
(es)