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GB388060A
|
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Improvements in and relating to pianofortes provided with devices for producing tremolos
|
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GB367908A
|
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Improvements relating to key musical instruments
|
|
US1877526A
|
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Keyboard instrument
|
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GB338479A
|
|
Improvements relating to stringed musical instruments
|
|
US1788775A
|
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Keyboard for musical instruments
|
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GB180633A
|
|
Improvements relating to pianofortes and like musical instruments
|
|
GB176362A
|
|
Arrangement for selectively producing the harpsichord effect upon horizontally strung pianos
|
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GB179900A
|
|
Improvements in or relating to sound-boards for pianoforte and like musical instruments
|
|
DE376241C
|
|
Musical instrument (piano, organ, etc.) with pedal arrangement
|
|
US1618546A
|
|
Keyboard for key instruments
|
|
GB161549A
|
|
Improvements relating to pianofortes and like instruments
|
|
DE371008C
|
|
Mechanics for keyboard instruments with horizontally lying strings (pianos, percussion zithers, etc.)
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