DIFF Subgroup
G06M 3/043 Full Title
Counters with additional facilities > for performing an operation at a predetermined value of the count, e.g. arresting a machine > with an additional counter train operating in the reverse direction
G06M 3/043 Counters with additional facilities > for performing an operation at a predetermined value of the count, e.g. arresting a machine > with an additional counter train operating in the reverse direction