IPC Subgroup
E21C 31/02 for cutting or breaking-down devices
Introduced: September 1968
Last revised: January 2006
Full Title
Driving means incorporated in machines for slitting or completely freeing the mineral from the seam > for cutting or breaking-down devices
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
2 direct subcodes
Child Classifications
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- E21C 31/04 imparting both a rotary and reciprocating motion
- E21C 31/06 actuated by an endless cable or chain