US PATENT SUBCLASS 70 / 272
.~.~ Clockwork control


Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
267  DF  .~ Predetermined time interval controlled {3}
272.~.~ Clockwork control {1}
273  DF  .~.~.~> Continuously operating once initiated {1}


DEFINITION

Classification: 70/272

(under subclass 267) Subject matter wherein the control elements are essentially of clockwork construction.