US PATENT SUBCLASS 368 / 174
.~.~.~.~ With spring bias

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}
173  DF  .~.~.~ By screw {1}
174.~.~.~.~ With spring bias

DEFINITION

Classification: 368/174

With spring bias:

(under subclass 173) Subject matter wherein the screw means is influenced by a spring.