| 968 / | HD | HOROLOGY |
| 85 | DD | GEARWORK (Gearwork for driving the hands subclass 140; calibers subclass 284; dispositions and components for transmission in general F16H) [G04B 13/00] {5} |
| 91 | | .~ With differential work [G04B 13/00G] {1} |
| 92 | DD | .~.~> Differentials [G04B 13/00G2] |