DIFF Subgroup
B23C 3/16 Working surfaces curved in two directions
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Milling particular work; Special milling operations; Machines therefor > Working surfaces curved in two directions
CPC:
Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, ) > Working surfaces curved in two directions
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- B23C 3/18 for shaping screw-propellers, turbine blades, or impellers IPC+CPC Available in IPC and CPC