US PATENT SUBCLASS 84 / 16
.~.~.~.~ Constant power


Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
*  DD  .~ Automatic {13}
7  DF  .~.~ Stringed {4}
13  DF  .~.~.~ Pianos {5}
16.~.~.~.~ Constant power {1}
17  DF  .~.~.~.~.~> Electric control {1}


DEFINITION

Classification: 84/16

The blow is struck by power derived from a rotating shaft or other constantly-operating source.