US PATENT SUBCLASS 70 / 288
.~.~.~ Selectively operable

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
286  DF  .~ Combination {8}
287  DF  .~.~ Individual blocking elements {1}
288.~.~.~ Selectively operable

DEFINITION

Classification: 70/288

(under subclass 287) Subject matter wherein the elements must be selectively operated in a predetermined order.