| 968 / | HD | HOROLOGY |
| 73 | DD | CLICK DEVICES; STOP CLICKS; CLUTCHES (mechanisms for winding up by hand subclass 23; automatic winding up subclass 40;) [G04B 11/00] {4} |
| 74 | DD | .~ Devices in which the motion of a rotating member is limited to one direction [G04B 11/00B] {3} |
| 78 | | .~.~ With friction member, e.g., click spring, etc. [G04B 11/00B4] |