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 ES488220ApriorityCriticalpatent/ES488220A0/es
Publication of ES8101347A1publicationCriticalpatent/ES8101347A1/es
Publication of ES488220A0publicationCriticalpatent/ES488220A0/es
CIRCUITOS DE LLAMADA POR PULSADOR PARA APARATOS TELEFONICOS. CONSISTE EN EL ENVIO A LA LINEA TELEFONICA DE TONOS DE FRECUENCIA Y NIVEL ADECUADOS PARA QUE SEAN ACEPTADOS POR LA CENTRAL, EL CIRCUITO INCLUYE UN RELE DE ESTADO SOLIDO PARA BLOQUEO DEL CIRCUITO TELEFONICO DE CONVERSACION, UN DESCONECTADOR DEL CIRCUITO DE CONVERSACION AL FINAL DE ESTA Y UN ALIMENTADOR DEL GENERADOR DE TONOS. C
ES488220A1980-02-011980-02-01Mejoras en los circuitos de llamada por pulsador para apara-tos telefonicos
GrantedES488220A0
(es)