US PATENT SUBCLASS 368 / 172
.~.~.~ By rack and pinion


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

168  DF  OSCILLATING OR RECIPROCATING MEANS {2}
169  DF  .~ Balance wheel type {1}
170  DF  .~.~ With regulation {4}
172.~.~.~ By rack and pinion


DEFINITION

Classification: 368/172

By rack and pinion:

(under subclass 170) Subject matter wherein the balance wheel is regulated by means which include a bar with teeth adapted to engage with the teeth of a cog wheel.