DIFF Subgroup
H04M 19/001 Full Title
Current supply arrangements for telephone systems (for selecting-equipment H04Q1/28)
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
H04M 19/001 Current supply arrangements for telephone systems (for selecting-equipment H04Q1/28)
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.