US PATENT SUBCLASS 368 / 163
.~.~.~ With magnet

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

155  DF  ELECTRICAL TIME BASE {2}
160  DF  .~ For reciprocating or oscillating element {3}
161  DF  .~.~ Balance wheel type {3}
163.~.~.~ With magnet

DEFINITION

Classification: 368/163

With magnet:

(under subclass 161) Subject matter wherein at least one magnet is on the balance wheel.