DIFF Subgroup
H04Q 3/52 using static devices in switching stages, e.g. electronic switching arrangements
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Selecting arrangements > Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker > using static devices in switching stages, e.g. electronic switching arrangements
CPC:
Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence) > Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker > using static devices in switching stages, e.g. electronic switching arrangements
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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