US PATENT SUBCLASS 368 / 178
.~.~.~.~ With stud

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}
175  DF  .~.~.~ By hairspring {3}
178.~.~.~.~ With stud

DEFINITION

Classification: 368/178

With stud:

(under subclass 175) Subject matter including means to support the outer end of the hairspring.