ES28247U - Electronic call, phonocommunication and opening device for building doors (Machine-translation by Google Translate, not legally binding)
- Google Patents
Electronic call, phonocommunication and opening device for building doors (Machine-translation by Google Translate, not legally binding)
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GRACA CABRITA EDUARDO
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GRACA CABRITA EDUARDO
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Priority to ES0028247UpriorityCriticalpatent/ES28247Y/en
Publication of ES28247UpublicationCriticalpatent/ES28247U/en
Application grantedgrantedCritical
Publication of ES28247YpublicationCriticalpatent/ES28247Y/en
Electronic call, phono-communication and opening device for building doors, characterized in that it contains call devices, phono-communication and control of the lock, with call buttons that, individually pressed, set the amplifier in motion, as well as its power supply and the audio-oscillator call, being retained the insert holding them. (Machine-translation by Google Translate, not legally binding)
ES0028247U1951-10-031951-10-03
Electronic device for calling, phonocommunication and opening for building doors
ExpiredES28247Y
(en)
Means for the command of the sense of conversation in high voice communication appliances (Machine-translation by Google Translate, not legally binding)