DIFF Subgroup Additional Only
G10K 2210/50 Miscellaneous
Full Title
Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups > Miscellaneous
Of 12 combined children, 0 exist in both systems.
12 codes are CPC-only extensions.
Note: 12 CPC extensions are marked as secondary classification only.