using pick-up means for reading recorded waves, e.g. on rotating discs

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Instruments in which the tones are generated by electromechanical means > using pick-up means for reading recorded waves, e.g. on rotating discs

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• G10H 3/06 using photoelectric pick-up means
• G10H 3/08 using inductive pick-up means
• G10H 3/10 using capacitive pick-up means