| 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} |
| 36 | | .~ Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel subclass 16; in connection with automatic winding devices subclass 20; construction of removably mounted keys subclass 29; means preventing overwinding, including those attached to the case, subclass 38; protecting means subclass 71; protection against overwinding for electrical winding up arrangements for mechanical clocks subclass 443) [G04B 3/06] |