US PATENT SUBCLASS 84 / 48
.~.~.~.~.~.~ Pneumatic details

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}
24  DF  .~.~.~.~ Pneumatic type {10}
33  DF  .~.~.~.~.~ Expression mechanism {8}
48.~.~.~.~.~.~ Pneumatic details

DEFINITION

Classification: 84/48

Pneumatic details limited to parts of the expression mechanism.

(1) Note. See this class, subclass 50 for similar constructions which do not have this limitation.