US PATENT SUBCLASS 968 / 35-- .~.~ 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]

US PATENT SUBCLASS 968 / 35
.~.~ 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]

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	DD	.~ Rigidly mounted keys, knob, or crowns (jointed winding stem subclass 322) [G04B 3/04] {5}
35		.~.~ 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]