DIFF Subgroup
B23H 9/08 Sharpening
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects > Sharpening
CPC:
Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects (heat treatment by cathodic discharge C21D1/38) > Sharpening
No child classifications to compare. This is a leaf node in both IPC and CPC.