IPC Subgroup
E21C 25/28 Chains or chain guides
Introduced: September 1968
Last revised: January 2006
Full Title
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam > Machines slitting solely by one or more cutter chains moving unidirectionally along jibs > Chains or chain guides
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 25/3 Chain guides
- E21C 25/34 Chains