US PATENT SUBCLASS 84 / 432
.~.~.~ Key frames adjustable

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
*  DD  .~ General features {7}
423 R  DF  .~.~ Keyboards {12}
432.~.~.~ Key frames adjustable

DEFINITION

Classification: 84/432

Means to vary the striking-point in a horizontal piano or to level the key-frame.