US PATENT SUBCLASS 84 / 394
.~.~.~.~ Tuning devices


Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
330  DF  .~ Wind {5}
387 R  DF  .~.~ Brasses {7}
388  DF  .~.~.~ Valve type {6}
394.~.~.~.~ Tuning devices


DEFINITION

Classification: 84/394

Means to change the key or pitch.