US PATENT SUBCLASS 70 / 409
.~.~.~.~ Bitting

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336  DF  .~ Key {10}
391  DF  .~.~ Operating elements {2}
393  DF  .~.~.~ Keys {8}
409.~.~.~.~ Bitting {3}
410  DF  .~.~.~.~.~> Frangible
411  DF  .~.~.~.~.~> Permutation
412  DF  .~.~.~.~.~> Threaded

DEFINITION

Classification: 70/409

(under subclass 393) Subject matter relating to that portion of the key which actually effects setting of tumblers or passage of the effective releasing portion of the key past wards.