US PATENT SUBCLASS 70 / 373
.~.~.~.~.~.~ Cylinder

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}
372  DF  .~.~.~.~.~ Operating elements, parts and adjuncts {5}
373.~.~.~.~.~.~ Cylinder {1}
374  DF  .~.~.~.~.~.~.~> Adjustable

DEFINITION

Classification: 70/373

(under subclass 372) Subject matter wherein the salient feature resides in the cylinder structure, per se.