ES316406A3 - An amplifier apparatus and capacitor of sound signals by contact head. (Machine-translation by Google Translate, not legally binding)
- Google Patents
An amplifier apparatus and capacitor of sound signals by contact head. (Machine-translation by Google Translate, not legally binding)
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Measurement Of Mechanical Vibrations Or Ultrasonic Waves
(AREA)
Abstract
An amplifier and sensor of sound signals by means of a contact head, characterized by a sensor head connected by a flexible electrical conductor to the amplifier assembly. The sensor head presents the suction cup for application to the outer casing of the telephone set, radio device or the like, whose audible signals are made audible by the one listening to the amplifier's loudspeaker0 The pick-up head carries the pick-up microphone. (Machine-translation by Google Translate, not legally binding)
ES0316406A1965-08-051965-08-05An amplifier apparatus and capacitor of sound signals by contact head. (Machine-translation by Google Translate, not legally binding)
ExpiredES316406A3
(en)
Perfected electronic device of automatic drive for recording and recording telephone calls. (Machine-translation by Google Translate, not legally binding)