US PATENT SUBCLASS 70 / 371
.~.~.~.~.~ Detachable or removable 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}
371.~.~.~.~.~ Detachable or removable cylinder

DEFINITION

Classification: 70/371

(under subclass 357) Subject matter wherein the entire cylinder constitutes a detachable or removable unit.