IPC Subgroup
B28B 7/3 adjustable, collapsible, or expanding
Introduced: September 1968
Last revised: January 2006
Full Title
Moulds; Cores; Mandrels > Cores; Mandrels > adjustable, collapsible, or expanding
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
1 direct subcode
Child Classifications
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- B28B 7/32 inflatable