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US1216829A
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Electric musical instrument.
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US1245517A
|
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Electric musical instrument.
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US1144435A
|
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Sonorous body and process of making the same.
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US1224420A
|
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Synchronizer.
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US1171668A
|
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Pianoforte control.
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US1196401A
|
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Electrical musical instrument.
|
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US1209214A
|
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Magnet-rail for electrical musical instruments.
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US1191482A
|
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Coupler for electric musical instruments.
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US1188564A
|
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Electrically-operated musical instrument.
|
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US1183685A
|
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Damping system for musical instruments.
|
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US1156329A
|
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Instrument for the production of musical tones forming a tempered scale.
|
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US1181486A
|
|
Art of producing musical tones.
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US1183245A
|
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Damping system for musical instruments.
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US1161349A
|
|
Electric governor.
|
|
US1183244A
|
|
Expression control for electrical musical instruments.
|
|
US1185251A
|
|
Timbre control in electrically-operated musical instruments.
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US1156321A
|
|
Expression device for musical instruments.
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