DIFF Subgroup
H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Antenna arrays or systems > Combinations of substantially independent non-interacting antenna units or systems
CPC:
Antenna arrays or systems (arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00) > Combinations of substantially independent non-interacting antenna units or systems
No child classifications to compare. This is a leaf node in both IPC and CPC.