| 968 / | HD | HOROLOGY |
| 876 | DD | SUBJECT MATTER NOT PROVIDED FOR IN SUBCLASSES 901 TO 975, E.G., INTEGRATED CIRCUITS FOR ELECTRONIC TIMEPIECES [G04G 1/00] {6} |
| 888 | DD | .~ Electric power supply circuits (in general H02M 1/00) [G04G 1/00C] {4} |
| 889 | DD | .~.~ Conversion or regulation of current or voltage [G04G 1/00C2] {2} |
| 891 | | .~.~.~ Regulation [G04G 1/00C2C] |