US PATENT SUBCLASS 968 / 515
.~.~ The timepiece preparing itself on set time on the reception of the synchronizing signal [G04C 11/04C]


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968 /   HD   HOROLOGY

506  DD  SYNCHRONIZATION OF INDEPENDENTLY DRIVEN CLOCKS (synchronization between master and slave pendulums subclass 532; synchronization of electronic oscillators in general H03L 7/00) [G04C 11/00] {7}
513  DD  .~ Over a line (transmitting time signals over telephone networks H04M 11/06; time setting subclass 498) [G04C 11/04] {2}
515.~.~ The timepiece preparing itself on set time on the reception of the synchronizing signal [G04C 11/04C]