DIFF Subgroup
H01S 5/4025 Full Title
Semiconductor lasers (superluminescent diodes H10H20/00) > Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30 (H01S5/50 takes precedence)
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.