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CODINI SEVERINO
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CODINI SEVERINO
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Publication of ES215299A1publicationCriticalpatent/ES215299A1/es
Aparato avisador de llamadas telefónicas aplicable a un aparato telefónico usual, caracterizado por comprender un motor que acciona un órgano que al desplazarse levanta el auricular del aparato telefónico y lo mantiene en esta posición en combinación con medios debidamente sincronizados que producen señales audibles por la persona que llama así, como medios para determinar el arranque y la detención del motor.
ES0215299A1953-07-281954-05-07UN APARATO AVISADOR DE LLAMADAS TELEFoNICAS, APLICABLE A UN APARATO TELEFONICO USUAL
ExpiredES215299A1
(es)