Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
E21C 41/26

Methods of surface mining (machines for obtaining, or the removal of, materials in open-pit mines E21C47/00); Layouts therefor

Introduced: January 1990

Title

Titles differ between systems:

IPC: Methods of surface mining; Layouts therefor

CPC: Methods of surface mining (machines for obtaining, or the removal of, materials in open-pit mines E21C47/00); Layouts therefor

Full Title

Full titles differ between systems:

IPC:

Methods of underground or surface mining; Layouts therefor > Methods of surface mining; Layouts therefor

CPC:

Methods of underground or surface mining (E21C45/00 takes precedence); Layouts therefor (for peat E21C49/00) > Methods of surface mining (machines for obtaining, or the removal of, materials in open-pit mines E21C47/00); Layouts therefor

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

Navigate with arrow keys, Enter to open

  • E21C 41/28 for brown or hard coal since 1990 IPC+CPC Available in IPC and CPC
  • E21C 41/30 for ores, e.g. mining placers since 1990 IPC+CPC Available in IPC and CPC
  • E21C 41/31 CPC only CPC only