IPC Subgroup
B28B 21/92 Methods or apparatus for treating or reshaping
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or machines specially adapted for the production of tubular articles > Methods or apparatus for treating or reshaping
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
DRESSING articles moulded from clay or other ceramic compositions or cementitious material
3 direct subcodes
Child Classifications
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- B28B 21/94 for impregnating or coating by applying liquids or semi-liquids
- B28B 21/96 for smoothing, roughening, corrugating or for removing burr
- B28B 21/98 for reshaping, e.g. by means of reshape moulds