IPC Subgroup
B28B 21/42 by shaping on or against mandrels or like moulding surfaces
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or machines specially adapted for the production of tubular articles > by shaping on or against mandrels or like moulding surfaces
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- WORKING CEMENT, CLAY, OR STONE
- Subclass:
- SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
4 direct subcodes
Child Classifications
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- B28B 21/44 by projecting, e.g. spraying
- B28B 21/46 by dipping
- B28B 21/48 by wrapping, e.g. winding
- B28B 21/5 Details of compression or compacting means