DIFF Subgroup
E02D 1/022 Full Title
Investigation of foundation soil in situ (investigation involving boring or specially adapted to earth drilling E21B25/00, E21B49/00; investigating or analysing materials by determining their chemical or physical properties, in general G01N, e.g. sampling G01N1/00) > before construction work
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.