IPC Subgroup
B28B 21/96 for smoothing, roughening, corrugating or for removing burr
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 > for smoothing, roughening, corrugating or for removing burr
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
BURNISHING of articles, moulded from clay or other ceramic compositions or cementitious materialBURNISHING of unfired potteryFETTLING of unfired potterytowing or fettling POTTERYTOWING of pottery