Instruments in which the tones are generated by electromechanical means: using mechanical

Official title: using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument

G10H3/12 (Instruments in which the tones are generated by electromechanical means: using mechanical) appears on 1,907 US grants and 1,561 published applications in this corpus.