DIFF Subgroup
H03K 17/161 Full Title
Electronic switching or gating, i.e. not by contact-making and –breaking (gated amplifiers H03F3/72; switching arrangements for exchange systems using static devices H04Q3/52) > Modifications for eliminating interference voltages or currents
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.