|
US1856730A
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Plano loud speaker
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US1838328A
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Automatic musical instrument
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Electromagnet valve device
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Automatic action for player pianos
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Music roll magazine
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GB317548A
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Improvements in or relating to music indicators for keyboard musical instruments
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Bearing
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Expression device for automatic pianos
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US1749403A
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Pedal means for automatic pianos and the like
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US1750988A
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Musical apparatus
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Instruction device for musical instruments
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US1733477A
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Instruction device for musical instruments
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US1728191A
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Instruction device for musical instruments
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Combination stop action for organs
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Pitman for pneumatic motors
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Organ
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Perforating machine and the like
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Expression regulator for player pianos
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Phonograph and radioadapter
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US1704077A
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Player action
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