DIFF Subgroup
H01B 17/50 with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
Introduced: September 1968
Full Title
Insulators or insulating bodies characterised by their form > with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
No child classifications to compare. This is a leaf node in both IPC and CPC.