| 968 / | HD | HOROLOGY |
| 426 | DD | WINDING MECHANICAL CLOCKS ELECTRICALLY (winding mechanically subclass 23; electrical winding of spring-driven arrangements for gramophones G11B 19/20) [G04C 1/00] {5} |
| 434 | DD | .~ By electric motors with rotating or with reciprocating movement [G04C 1/04] {2} |
| 435 | DD | .~.~ Winding up springs [G04C 1/06] {3} |
| 438 | | .~.~.~ By stepping rotating movement [G04C 1/06D] |