ES292377A3 - Automatic equipment for recording telephone communications (Machine-translation by Google Translate, not legally binding)
- Google Patents
Automatic equipment for recording telephone communications (Machine-translation by Google Translate, not legally binding)
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.)
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SANZ CERRUDO PEDRO
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SANZ CERRUDO PEDRO
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Priority to ES0292377ApriorityCriticalpatent/ES292377A3/en
Publication of ES292377A3publicationCriticalpatent/ES292377A3/en
Automatic equipment for recording telephone communications that is mainly characterized by being formed by two independent electronic units, but coupled together by multiple plug, once it is a telephone electronic supplementary circuit, without handset or buzzer, which connects directly to the network telephone, and in which a relay circuit is established that governs by the alternating current of the call for the bell, acts on a relay that changes the supplementary circuit passing it to conversation connection, and likewise such relay also has the corresponding circuits to put on the way to the recording device. (Machine-translation by Google Translate, not legally binding)
ES0292377A1963-10-101963-10-10Automatic equipment for recording telephone communications (Machine-translation by Google Translate, not legally binding)
ExpiredES292377A3
(en)