DIFF Subgroup
B23C 3/26 Making square or polygonal holes in workpieces, e.g. key holes in tools
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Milling particular work; Special milling operations; Machines therefor > Making square or polygonal holes in workpieces, e.g. key holes in tools
CPC:
Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, ) > Making square or polygonal holes in workpieces, e.g. key holes in tools
No child classifications to compare. This is a leaf node in both IPC and CPC.