| 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} |
| 429 | | .~ By electromagnets [G04C 1/02] {3} |
| 430 | DD | .~.~> With snap-acting armature [G04C 1/02B] {1} |
| 432 | DD | .~.~> Having unipolar rotating armature (two-pole or multipole arrangements subclasses 434, 435, and 439) [G04C 1/02C] |
| 433 | DD | .~.~> With linearly moving armature [G04C 1/02D] |