US PATENT SUBCLASS 70 / 359
.~.~.~.~.~ Concentric tumblers


Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336  DF  .~ Key {10}
344  DF  .~.~ Single key {4}
348  DF  .~.~.~ Tumbler type {5}
357  DF  .~.~.~.~ Cylinder type {9}
359.~.~.~.~.~ Concentric tumblers


DEFINITION

Classification: 70/359

(under subclass 357) Subject matter wherein the tumblers are concentrically disposed.