US PATENT SUBCLASS 368 / 143
.~.~ With mainwheel on arbor

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}
143.~.~ With mainwheel on arbor

DEFINITION

Classification: 368/143

With mainwheel on arbor:

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