US PATENT SUBCLASS 968 / 751
.~.~ For electric or electronic clocks [G04D 7/00C2]


Current as of: June, 1999
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968 /   HD   HOROLOGY

748  DD  MEASURING, COUNTING, CALIBRATING, TESTING, OR REGULATING APPARATUS (measuring devices and calibers in general G01B; counters in general H03K) [G04D 7/00] {11}
750  DD  .~ Electrical measuring and testing apparatus [G04D 7/00C] {1}
751.~.~ For electric or electronic clocks [G04D 7/00C2]