US PATENT SUBCLASS 84 / 13
.~.~.~ Pianos

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
*  DD  .~ Automatic {13}
7  DF  .~.~ Stringed {4}
13.~.~.~ Pianos {5}
14  DF  .~.~.~.~> Without keys {1}
16  DF  .~.~.~.~> Constant power {1}
19  DF  .~.~.~.~> Electric power {2}
24  DF  .~.~.~.~> Pneumatic type {10}
*  DD  .~.~.~.~> Cases {3}

DEFINITION

Classification: 84/13

Patents for the complete instrument or for features not specific to a subclass below.

(1) Note. For players readily removable from the piano and applicable also to a reed-organ keyboard see this class, subclasses 105 to 114.

(2) Note. If the invention is limited to features of the selecting mechanism, see this class, subclass 115 and the indented subclasses.