US PATENT SUBCLASS 84 / 65
.~.~.~.~.~ Power pneumatics

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}
65.~.~.~.~.~ Power pneumatics {1}
66  DF  .~.~.~.~.~.~> Connections to hammers {3}

DEFINITION

Classification: 84/65

Pneumatics to strike the keys or throw the hammers or exert power otherwise.

(1) Note. For pneumatics to shift the valves see this class, subclasses 50+.