IPC Subgroup
B21F 37/02 of resilient rings, e.g. key-rings
Introduced: September 1968
Last revised: January 2006
Full Title
Manufacture of rings from wire > of resilient rings, e.g. key-rings
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF METAL WIRE