DIFF Subgroup
B27K 3/44 Tar; Mineral oil
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Impregnating wood, e.g. for protection > Organic impregnating agents > Tar; Mineral oil
CPC:
Impregnating wood, (dyeing, staining B27K5/00) > Organic impregnating agents > Tar; Mineral oil
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
Navigate with arrow keys, Enter to open