US PATENT SUBCLASS 70 / 220
.~.~.~.~.~.~ Push pin or button

Current as of: June, 1999
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70 /   HD   LOCKS

57  DF  SPECIAL APPLICATION {7}
174  DF  .~ For control and machine elements {8}
207  DF  .~.~ Handle, handwheel or knob {3}
209  DF  .~.~.~ Rotary or swinging {2}
218  DF  .~.~.~.~ Freely movable when locked {2}
219  DF  .~.~.~.~.~ Combination lock {1}
220.~.~.~.~.~.~ Push pin or button

DEFINITION

Classification: 70/220

(under subclass 219) Devices employing a plurality of push pins or buttons.