IPC Subgroup
B21H 9/02 for screw-rolling machines
Introduced: September 1968
Last revised: January 2006
Full Title
Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass > for screw-rolling machines
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS