US PATENT SUBCLASS 968 / 249
.~ Internal gear therefor, e.g., for setting the second hand or for setting several clockworks, etc. [G04B 27/00B]


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968 /   HD   HOROLOGY

248  DD  MECHANICAL DEVICES FOR SETTING THE TIME-INDICATING MEANS [G04B 27/00] {8}
249.~ Internal gear therefor, e.g., for setting the second hand or for setting several clockworks, etc. [G04B 27/00B]