US PATENT SUBCLASS 368 / 170
.~.~ With regulation

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.~.~ With regulation {4}
171  DF  .~.~.~> By compensation
172  DF  .~.~.~> By rack and pinion
173  DF  .~.~.~> By screw {1}
175  DF  .~.~.~> By hairspring {3}

DEFINITION

Classification: 368/170

With regulation:

(under subclass 169) Subject matter including means to control the operation of the balance wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

184+, for regulation of timepiece operation, per se.