Full Title

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (electro-acoustic transducers such as loudspeakers, microphones or gramophone pick-ups H04R; piezoelectric, electrostrictive or magnetostrictive devices with mechanical input or output, e.g. actuators or sensors, H10N30/00, H10N35/00) > Details > Driving means, e.g. electrodes, coils > for networks consisting of piezoelectric or electrostrictive materials (for networks using surface acoustic waves H03H9/145)