IPC Subgroup
E21C 25/52 Machines incorporating two or more of the slitting means according to groups , , , and
Introduced: September 1968
Last revised: January 2006
Full Title
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam > Machines incorporating two or more of the slitting means according to groups , , , and
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING