US PATENT SUBCLASS 84 / 67
.~.~.~.~.~.~.~ To key

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  DF  .~.~.~.~.~ Power pneumatics {1}
66  DF  .~.~.~.~.~.~ Connections to hammers {3}
67.~.~.~.~.~.~.~ To key

DEFINITION

Classification: 84/67

The connection engages the key.