|
US1627011A
|
|
Pneumatically-operated musical instrument
|
|
US1648807A
|
|
Device for controlling air pressure
|
|
US1538108A
|
|
Valve-seat construction
|
|
US1578317A
|
|
Fall-board and music-desk construction
|
|
US1605239A
|
|
Sounding board for pianos
|
|
US1433716A
|
|
Expression device for musical instruments
|
|
US1686557A
|
|
Method and apparatus for preparing music rolls
|
|
US1405461A
|
|
Pressure regulator
|
|
CA188134A
|
|
Player piano
|
|
CA186070A
|
|
Musical instrument
|
|
CA185313A
|
|
Power regulating apparatus
|
|
US1422969A
|
|
Expression device for automatic musical instruments
|
|
US1392640A
|
|
Indicating device usable with music-recording mechanism
|
|
US1235759A
|
|
Pneumatic action for muscial instruments.
|
|
US1231809A
|
|
Automatic musical instrument.
|
|
US1235760A
|
|
Pneumatic action for musical instruments.
|
|
US1404805A
|
|
Automatic musical instrument
|
|
US1336396A
|
|
Air-pump
|
|
US1265792A
|
|
Expression device for automatic musical instruments.
|
|
US1183739A
|
|
Mechanical musical instrument.
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