DIFF Subgroup
A61N 1/16 Screening or neutralising undesirable influences from atmospheric or terrestrial radiation or fields
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Electrotherapy; Circuits therefor > Screening or neutralising undesirable influences from atmospheric or terrestrial radiation or fields
CPC:
Electrotherapy; Circuits therefor (A61N2/00 takes precedence; irradiation apparatus A61N5/00) > Screening or neutralising undesirable influences from atmospheric or terrestrial radiation or fields
No child classifications to compare. This is a leaf node in both IPC and CPC.