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US1354045A
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Expression device for automatic musical instruments
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US1329613A
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Electrically-driven pneumatic musical instrument
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US1296819A
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Expression-controlling device.
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US1273382A
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Panel and pedal operating mechanism.
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US1242952A
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Key-cover for pianos and other musical instrument.
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US1258123A
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Tracker-bar attachment.
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US1234239A
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Tracker mechanism for musical instruments.
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US1198360A
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Speed-controlling device for musical instruments.
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US1202538A
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Rerolling, replaying, and stopping mechanism for musical instruments.
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US1300978A
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Reroll-controlling mechanism for musical instruments.
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US1261137A
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Panel and pedal mechanism for musical instruments.
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US1200175A
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Guide mechanism for traveling music-sheets.
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US1094428A
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Web-guiding device.
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US902481A
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Double-scale pneumatic musical instrument.
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US884643A
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Folding pedal.
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US902536A
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Sectional modulating attachment for musical instruments.
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US902478A
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Tracker-bar mechanism.
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US877573A
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Automatic piano.
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US875823A
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Means for opening and closing panels of musical instruments.
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US887773A
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Divided action for pianos.
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