B
SECTION B — PERFORMING OPERATIONS
  
SHAPING
 B28
WORKING CEMENT, CLAY, AND STONE
 B28B
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping materials in their plastic state in general B29C; making layered products not composed wholly of these substances B32B; shaping in situ, see the relevant classes of Section E)
 B28B

Note(s)

The term "the material" is used throughout to mean:

  1. clay or other ceramic compositions
  2. slag
  3. mixtures with water-setting properties given by clay, cementitious material, or slag.


 B28C
PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds B22C 5/00)
 B28C

Note(s)

In this sub-class:

  1. the term "cement" and the expression "mixtures of cement with other substances" are to be understood to include plaster;
  2. the term "clay" is to be understood to include like ceramic compositions.


 B28D
WORKING STONE OR STONE-LIKE MATERIALS