DIFF Subgroup
G11B 5/00804 Full Title
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Recording on, or reproducing or erasing from, magnetic tapes, or wires (G11B15/00 take precedence; )
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.