US PATENT SUBCLASS 70 / 338
.~.~.~ Selective shutout type


Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336  DF  .~ Key {10}
337  DF  .~.~ Multiple keys {3}
338.~.~.~ Selective shutout type


DEFINITION

Classification: 70/338

(under subclass 337) Subject matter wherein operation by one key may selectively shut out or prevent successful subsequent operation by another key.