US PATENT SUBCLASS 968 / 552
.~.~ By electrically released mechanical driving mechanisms [G04C 13/14]
Current as of:
June, 1999
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968 /
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HOROLOGY
524
DD
DRIVING MECHANISMS FOR CLOCKS BY MASTER CLOCKS [G04C 13/00]
{2}
547
DD
.~ Slave clocks actuated intermittently [G04C 13/08] {3}
552
.~.~ By electrically released mechanical driving mechanisms [G04C 13/14]
