DIFF Subgroup
G01R 31/005 Full Title
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere ( testing line transmission systems H04B3/46; testing or measuring semiconductors or solid state devices during manufacture )
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.