US PATENT SUBCLASS 968 / 924
.~.~ The timepiece preparing itself on set times on the reception of the synchronizing signal [G04G 7/02C]


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968 /   HD   HOROLOGY

920  DD  SYNCHRONIZATION [G04G 7/00] {2}
922  DD  .~ By radio [G04G 7/02] {2}
924.~.~ The timepiece preparing itself on set times on the reception of the synchronizing signal [G04G 7/02C]