| 968 / | HD | HOROLOGY |
| 446 | DD | ELECTROMECHANICAL CLOCKS OR WATCHES INDEPENDENT OF OTHER TIMEPIECES AND IN WHICH THE MOVEMENT IS MAINTAINED BY ELECTRIC MEANS (synchronization subclass 506) [G04C 3/00] {8} |
| 447 | DD | .~ Electromechanical switches for setting or display [G04C 3/00K] {4} |
| 450 | | .~.~ Multiple switches (subclass 449 takes precedence) [G04C 3/00K4] |