DIFF Subgroup
G02B 13/001 Full Title
Optical objectives specially designed for the purposes specified below (with variable magnification G02B15/00)
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
G02B 13/001 Optical objectives specially designed for the purposes specified below (with variable magnification G02B15/00)
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.