IPC Subgroup
E21C 35/22 Equipment for preventing the formation of, or for removal of, dust
Introduced: September 1968
Last revised: January 2006
Full Title
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or > Equipment for preventing the formation of, or for removal of, dust
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
1 direct subcode
Child Classifications
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- E21C 35/23 Distribution of spraying-fluids in rotating cutter-heads