US PATENT SUBCLASS 70 / 291
.~.~ Tumbler type

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
286  DF  .~ Combination {8}
291.~.~ Tumbler type {3}
292  DF  .~.~.~> Plural interdependent sets
293  DF  .~.~.~> Plural independently operable sets
294  DF  .~.~.~> Single tumbler set {4}

DEFINITION

Classification: 70/291

(under subclass 286) Subject matter wherein tumblers are employed as the immediate impeding elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

323+, for specific tumbler structure.