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GB123273A
|
|
Improvement in Metal Sounding-boards for Pianos.
|
|
CA148546A
|
|
Means of stretching a resonant plate
|
|
GB191219861A
|
|
Improvements in Stringed Musical Instruments.
|
|
GB191218578A
|
|
Improvements in Means for Stretching a Resonant Plate Over a Frame in Pianos or other String Instruments.
|
|
US1078424A
|
|
Means for stretching a resonant plate over a frame.
|
|
US1073673A
|
|
Piano or other string instrument.
|
|
CA150336A
|
|
Sounding board for musical instruments
|
|
GB191121826A
|
|
Improvements in and relating to Sounding-boards for Musical Instruments, applicable also for other purposes.
|
|
US1062275A
|
|
Sounding-board.
|
|
CA234095A
|
|
Metal sounding board for pianos
|
