DIFF Subgroup
G12B 17/02 from electric or magnetic fields, e.g. radio waves
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Screening > from electric or magnetic fields, e.g. radio waves
CPC:
Screening (insulation or other protection of buildings E04B; emergency protection of apparatus in general F16P7/00; in connection with acoustic waves G10K11/00; in connection with nuclear radiation G21F) > from electric or magnetic fields, e.g. radio waves
No child classifications to compare. This is a leaf node in both IPC and CPC.