US3329761A
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Two channel tremolo
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US3298268A
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Piano construction having a curved back
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US2195624A
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Piano
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US1575746A
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Player-piano unit
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US1399114A
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Music-sheet guide
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US1446116A
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Expression device for self-playing pianos
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US1427794A
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Double-acting pneumatic motor
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US1147725A
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Pneumatic action for player-pianos.
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US1125320A
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Pneumatic action for player-pianos.
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US1058870A
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Swell-shade action for self-playing organs.
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US1101937A
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Means for controlling adjustable combination stop-actions in self-playing organs.
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US992772A
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Self-playing musical instrument.
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US1051407A
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Music-roll.
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US1089765A
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Pneumatic player-action.
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US1051406A
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Exhaust-regulating valve for pneumatic player-actions.
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US974885A
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Player-piano.
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US974884A
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Player-piano.
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US929138A
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Combination organ stop-action.
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US936851A
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Self-playing piano.
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US920954A
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Self-playing piano.
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