DIFF Subgroup
G07C 1/20 Checking timed patrols, e.g. of watchman
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Registering, indicating, or recording the time of events or elapsed time, e.g. time-recorders for work people > Checking timed patrols, e.g. of watchman
CPC:
Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people (registering or indicating the working of machines or vehicles G07C3/00, G07C5/00) > Checking timed patrols, e.g. of watchman
No child classifications to compare. This is a leaf node in both IPC and CPC.