DIFF Subgroup
H01Q 1/364 Full Title
Details of, or arrangements associated with, antennas (arrangements for varying orientation of directional pattern H01Q3/00) > Structural form of radiating elements, e.g. cone, spiral, umbrella; (H01Q1/08, H01Q1/14 take precedence)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.