IPC Subgroup
B21D 28/28 in tubes or other hollow bodies
Introduced: September 1968
Last revised: January 2006
Full Title
Shaping by press-cutting; Perforating > Perforating, i.e. punching holes > in tubes or other hollow bodies
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL