| 968 / | HD | HOROLOGY |
| 925 | DD | VISUAL TIME- OR DATE-INDICATION MEANS [G04G 9/00] {9} |
| 954 | DD | .~ By building up characters using a combination of indicating elements, e.g., by using multiplexing techniques, etc. [G04G 9/08] {5} |
| 958 | DD | .~.~ By controlling light sources, e.g., electroluminescent diodes, etc. (subclass 935 takes precedence) [G04G 9/10] {3} |
| 959 | | .~.~.~ Using multiplexing techniques [G04G 9/10B] |