US PATENT SUBCLASS 84 / 198
.~.~.~.~ Auxiliary strings

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
173  DF  .~ Stringed {10}
174  DF  .~.~ Pianos {19}
197  DF  .~.~.~ Stringing {1}
198.~.~.~.~ Auxiliary strings

DEFINITION

Classification: 84/198

Extra strings or extensions furnishing unisons or harmonics. They may be struck by the hammer or may vibrate sympathetically.