IPC Subgroup
B21K 1/64 nuts
Introduced: September 1968
Last revised: January 2006
Full Title
Making machine elements > nuts
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
Related Keywords
making NUT(S) by forging, pressing or hammering
3 direct subcodes
Child Classifications
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