US PATENT SUBCLASS 968 / 30
.~ Rigidly mounted keys, knob, or crowns (jointed winding stem subclass 322) [G04B 3/04]


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968 /   HD   HOROLOGY

23  DD  NORMAL WINDING OF CLOCKWORKS BY HAND OR MECHANICALLY; WINDING UP SEVERAL MAINSPRINGS OR DRIVING WEIGHTS SIMULTANEOUSLY (see note attached to this subclass) {10}
30.~ Rigidly mounted keys, knob, or crowns (jointed winding stem subclass 322) [G04B 3/04] {5}
31  DD  .~.~> Construction of crowns for rotating movement; connection with the winding stem; winding stems [G04B 3/04B]
32  DD  .~.~> Locking of the operating element, also by mounting in a concealed place [G04B 3/04C]
33  DD  .~.~> Storing the operating element, also bringing it out of storage [G04B 3/04D]
34  DD  .~.~> Operation by rotation and axial movement with extra function of axial shift of operating element, e.g., crown combined with push button, etc. (winding up by push button subclass 24) [G04B 3/04F]
35  DD  .~.~> Operation exclusively by axial movement of a pushbutton, e.g., for chronographs, etc. (winding up by pushbutton subclass 24; hermetically sealed pushbutton subclass 341) [G04B 3/04G]