US PATENT SUBCLASS 70 / 411
.~.~.~.~.~ Permutation

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  DF  .~.~.~.~ Bitting {3}
411.~.~.~.~.~ Permutation

DEFINITION

Classification: 70/411

(under subclass 409) Devices including variable or changeable parts to change the effective combination of the key.