US PATENT SUBCLASS 70 / 336
.~ Key

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336.~ Key {10}
337  DF  .~.~> Multiple keys {3}
344  DF  .~.~> Single key {4}
382  DF  .~.~> Permutation {2}
386  DF  .~.~> With ball or roller
387  DF  .~.~> Push or pull key operation
388  DF  .~.~> Key ejecting
389  DF  .~.~> Key-removal preventing
390  DF  .~.~> False or picking key trapping
391  DF  .~.~> Operating elements {2}
416  DF  .~.~> Tampering prevention or attack defeating {6}

DEFINITION

Classification: 70/336

(under subclass 266) Subject matter wherein the impeding structure is overcome or operated by internal mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:

393+, for a key, which is the operating implement.