| 968 / | HD | HOROLOGY |
| 906 | DD | SETTING, I.E., CORRECTING OR CHANGING THE TIME-INDICATION (synchronization combined with automatic setting at regular intervals, e.g., by coded signals, etc., subclass 920) [G04G 5/00] {5} |
| 908 | | .~ Debouncing circuits [G04G 5/00C] |