Generator electro-acoustic producer of low frequency signals and suitable to create music sounds with the help of an amplifier. (Machine-translation by Google Translate, not legally binding)
ES244283A1
Perfected electronic organ that comprises oscillators and frequency dividers not maintained in state of permanent operation (Machine-translation by Google Translate, not legally binding)
ES233537A1
Perfections designed to reduce the number of oscillators in electronic music instruments and electronic organ given of such perfections (Machine-translation by Google Translate, not legally binding)
ES233538A1
Improvements in devices susceptible to produce sounds similar to those of the campanas and carrillones (Machine-translation by Google Translate, not legally binding)
ES187050A1
A procedure, with its corresponding devices, to produce sounds similar to those produced by campanas touched to the flight
