232025 ⎘
Piezo-electric transducers; Electrostrictive transducers Gramophone pick-ups using a stylus; Recorders using a stylus
Sub-classes:MICROPHONES
#2Apparatus for varying the pitch of audible tones driven by a turntable
#3Tactile sense presentation device
#4Pointer System for Context Based Feedback
#5Speaker
#6Method for treating PZT element, PZT micro-actuator, head gimbal assembly and disk drive unit with treated PZT micro-actuator