IPC Subgroup
B21F 33/04 Connecting ends of helical springs for mattresses
Introduced: September 1968
Last revised: January 2006
Full Title
Tools or devices specially designed for handling or processing wire fabrics or the like > Connecting ends of helical springs for mattresses
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF METAL WIRE