IPC Main Group
B21F 37/00 Manufacture of rings from wire
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF METAL WIRE
Scope Notes
Application references: Making metal chains Producing bead-rings or bead-cores for tyres
Related Keywords
making RING(S) from wiremaking wire SPRING(S)
2 direct subcodes
Child Classifications
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- B21F 37/02 of resilient rings, e.g. key-rings
- B21F 37/04 of washers