Improvements in relay switching systems. (Machine-translation by Google Translate, not legally binding)
ES356119A1
System for the coupling of bafles to sound player appliances. (Machine-translation by Google Translate, not legally binding)
ES347086A3
Improvements in the construction of asynchronous fractional electric motors. (Machine-translation by Google Translate, not legally binding)
ES347087A3
Improvements in the construction of ardilla cage rotors for asynchronic fractional electric motors. (Machine-translation by Google Translate, not legally binding)
ES346891A3
Mechanism for the coupling of capsules fonocaptoras in the arm of tocadiscos. (Machine-translation by Google Translate, not legally binding)
ES343763A3
Improvements in the construction of electromotors. (Machine-translation by Google Translate, not legally binding)
ES342814A3
Electronic telegobierno equipment. (Machine-translation by Google Translate, not legally binding)
ES342447A1
Improvements in the construction of suitcases for tocadiscos. (Machine-translation by Google Translate, not legally binding)
ES341212A1
Improvements in loudspeakers equipment. (Machine-translation by Google Translate, not legally binding)
ES340892A3
Mechanism for effects of acoustic reverberation. (Machine-translation by Google Translate, not legally binding)
ES340509A3
Improvements in the apparatus for auditing sound programs. (Machine-translation by Google Translate, not legally binding)
ES339886A3
Speed regulator for continuous current electromotors. (Machine-translation by Google Translate, not legally binding)
ES339229A3
Procedure for the manufacture of furniture for speakers and similar. (Machine-translation by Google Translate, not legally binding)
ES334853A3
Improvements in mechanisms for magneto phonic recording devices. (Machine-translation by Google Translate, not legally binding)
