CPC Subgroup
H03K 23/72 Decade counters (H03K23/66 takes precedence)
Full Title
Pulse counters comprising counting chains; Frequency dividers comprising counting chains (H03K29/00 takes precedence) > with a base or radix other than a power of two (H03K23/40 - H03K23/62 take precedence) > Decade counters (H03K23/66 takes precedence)