DIFF Subgroup
B23C 3/32 Milling helical grooves, e.g. in making twist-drills
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Milling particular work; Special milling operations; Machines therefor > Grooving workpieces > Milling helical grooves, e.g. in making twist-drills
CPC:
Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, ) > Grooving workpieces (tread-cutting by milling B23G1/32) > Milling helical grooves, e.g. in making twist-drills
No child classifications to compare. This is a leaf node in both IPC and CPC.