G04C 23/20 with contacts operated, or formed by clock hands or elements of similar form
Introduced: September 1968
Title
Titles differ between systems:
IPC: with contacts operated, or formed, by clock hands or elements of similar form
CPC: with contacts operated, or formed by clock hands or elements of similar form
Full Title
Full titles differ between systems:
Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals > Mechanisms continuously running to relate the operation(s) to the time of day > for operating one device at a number of different times > with contacts operated, or formed, by clock hands or elements of similar form
Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals (if restricted to producing acoustic time signals by electrical means G04C21/00) > Mechanisms continuously running to relate the operation(s) to the time of day > for operating one device at a number of different times > with contacts operated, or formed by clock hands or elements of similar form
No child classifications to compare. This is a leaf node in both IPC and CPC.