US PATENT SUBCLASS 368 / 53
.~.~ By external condition responsive means

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

46  DF  PLURAL TIMEPIECE SYSTEM OR SYSTEM DEVICE (E.G., PRIMARY OR SECONDARY CLOCKS) {5}
52  DF  .~ Primary with direct synchronization or drive {6}
53.~.~ By external condition responsive means

DEFINITION

Classification: 368/53

By external condition responsive means:

(under subclass 52) Subject matter wherein the synchronization of the remote time-readout means is accomplished as a result of some condition, such as ambient temperature change.