Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C21D 7/04

of the surface

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Modifying the physical properties of iron or steel by deformation > by cold working > of the surface

CPC:

Modifying the physical properties of iron or steel by deformation (apparatus for mechanical working of metal B21, B23, B24) > by cold working > of the surface

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

  • C21D 7/06 by shot-peening or the like IPC+CPC Available in IPC and CPC
  • C21D 7/08 by burnishing or the like IPC+CPC Available in IPC and CPC