Piezo-electric acceleration sensor
Piezo-electric actuator and stepping device using same
Piezo-electric actuator control method and device and variable w
Piezo-electric actuator operable in an electrolytic fluid
Piezo-electric actuator operable in an electrolytic fluid
Piezo-electric assembly
Piezo-electric assembly
Piezo-electric device
Piezo-electric device
Piezo-electric device
Piezo-electric device type actuator
Piezo-electric disc mounting methods and apparatus
Piezo-electric drive and its use for driving heavy loads
Piezo-electric driving device
Piezo-electric level detector
Piezo-electric motor
Piezo-electric motor
Piezo-electric motor
Piezo-electric motor intended for a timepiece
Piezo-electric oscillator and method of manufacturing the same