DIFF Subgroup
H01Q 1/04 Adaptation for subterranean or subaqueous use
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Details of, or arrangements associated with, antennas > Adaptation for subterranean or subaqueous use
CPC:
Details of, or arrangements associated with, antennas (arrangements for varying orientation of directional pattern H01Q3/00) > Adaptation for subterranean or subaqueous use
No child classifications to compare. This is a leaf node in both IPC and CPC.