| 968 / | HD | HOROLOGY |
| 229 | DD | ARRANGEMENTS PRODUCING ACOUSTIC SIGNALS AT PRESELECTED TIMES (optical time indicating subclass 139, 564, and 577; indicating by acoustic means subclass 217; indicating time by means other than acoustic or optical or by a combination of means subclass 243; acoustic time signals produced electrically subclass 580; coin-freed alarm clocks G07F 17/00B; acoustic signalling means G08B 3/00) [G04B 23/00] {2} |
| 231 | DD | .~ Alarm clocks (electrically released alarm signals subclass 580; waking up by electric lamps subclass 578; by other means subclass 244; alarm clocks with electric contacts subclass 608) [G04B 23/02] {11} |
| 238 | | .~.~ With coarse and fine setting of the preselected times [G04B 23/04] |