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PCE
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DIFF Subgroup
E21C 31/02

for cutting or breaking-down devices

Introduced: September 1968

Full Title

Driving means incorporated in machines for slitting or completely freeing the mineral from the seam > for cutting or breaking-down devices

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • E21C 31/025 CPC only CPC only
  • E21C 31/04 imparting both a rotary and reciprocating motion IPC+CPC Available in IPC and CPC
  • E21C 31/06 actuated by an endless cable or chain IPC+CPC Available in IPC and CPC