| 968 / | HD | HOROLOGY |
| 2 | DD | DRIVING MECHANISMS (driving mechanisms for Turkish time subclass 167; driving mechanisms in the hands subclass 396; driving mechanisms for phonographic apparatus G11B 19/00; springs, driving weight engines F03G; driving mechanisms for cinematography G03B 1/00; driving mechanisms; driving mechanisms for time fuses for missiles F42C; driving mechanisms for toys A63H 11/23) [G04B 1/00] {4} |
| 7 | DD | .~ With mainspring (synchronous motors with power reserve subclass 559; springs in general F16F) [G04B 1/10] {6} |
| 12 | DD | .~.~ Barrels; arbors; barrel axles (arrangements facilitating the removal of the mainspring subclass 291) [G04B 1/16] {1} |
| 13 | | .~.~.~ Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks; friction clutch between spring and spring cylinder subclass 15) [G04B 1/16B] |