US PATENT SUBCLASS 368 / 142
.~.~ With mainwheel on barrel

Current as of: June, 1999
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368 /   HD   HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES

139  DF  MECHANICAL TIME BASE {1}
140  DF  .~ Mainspring {7}
142.~.~ With mainwheel on barrel

DEFINITION

Classification: 368/142

With mainwheel on barrel:

(under subclass 140) Subject matter including a mainwheel attached to a mainspring barrel.