CPC Subgroup
H04R 17/10 Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
Full Title
Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners ) > Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency