IPC Subgroup
B28B 21/86 Cores
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or machines specially adapted for the production of tubular articles > Cores
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
Related Keywords
CORE(S) for moulding clay or other ceramic compositions or cementitious material
1 direct subcode
Child Classifications
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- B28B 21/88 adjustable, collapsible or expansible