| 968 / | HD | HOROLOGY |
| 139 | DD | INDICATING BY VISUAL MEANS (by electric lamps subclass 576; indicating by acoustical means mechanically subclass 217, electrically subclass 580; acoustic signals at preselected times mechanically subclass 229, electrically subclass 580; optical time signals at preselected times mechanically subclass 244, electrically subclass 577; continuous time indication by electric means subclass 564; visible signalling arrangements G08B 5/00) [G04B 19/00] {10} |
| 211 | DD | .~ Adjustable guide marks or pointers for indicating determined points of time (inscriptions or pictures moved by hand subclass 385) [G04B 19/28] {1} |
| 212 | | .~.~ On rotatable rings [G04B 19/28B] |