ข้อมูลGENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL (for particular physical or chemical processes, see the relevant subclasses, e.g. B07B0001400000, B22C0019060000, B23Q0017120000, B24B0031060000, E01C0019220000; measurement of mechanical vibrations, including the combination of generation and measurement, G01H; systems using reflection or reradiation of acoustic waves G01S0015000000; generating seismic energy for prospecting G01V0001020000; control of mechanical vibrations G05D0019000000; methods or devices for transmitting, conducting or directing sound, in general G10K0011000000; synthesis of acoustic waves G10K0015020000; piezo-electric, electrostrictive or magnetostrictive elements H01L0041000000; motors with vibrating magnet, armature or coil H02K0033000000; motors using piezo-electric effect, electrostriction or magnetostriction H02N0002000000; generation of electrical oscillations H03B; electromechanical resonators as resonant circuit elements H03H; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R)

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