ES201599A1 - Improvements in receptors of acoustic signals, particularly for road vehicles. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in receptors of acoustic signals, particularly for road vehicles. (Machine-translation by Google Translate, not legally binding)
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NUNEZ DE LAS CUEVAS RODOLFO
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NUNEZ DE LAS CUEVAS RODOLFO
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Priority to ES0201599ApriorityCriticalpatent/ES201599A1/en
Publication of ES201599A1publicationCriticalpatent/ES201599A1/en
Improvements in receivers of acoustic signals, particularly for road vehicles, characterized in that said device consists essentially of a microphonic receiver and a magnetic relay, being able to do without amplifier and valves. (Machine-translation by Google Translate, not legally binding)
ES0201599A1952-01-251952-01-25Improvements in receptors of acoustic signals, particularly for road vehicles. (Machine-translation by Google Translate, not legally binding)
ExpiredES201599A1
(en)