DIFF Subgroup
H01Q 1/38 formed by a conductive layer on an insulating support
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Details of, or arrangements associated with, antennas > Structural form of radiating elements, e.g. cone, spiral, umbrella > formed by a conductive layer on an insulating support
CPC:
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) > formed by a conductive layer on an insulating support
No child classifications to compare. This is a leaf node in both IPC and CPC.