Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B28
WORKING CEMENT, CLAY, OR STONE
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B28B
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
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17/00
Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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B28B17/02
Conditioning the material prior to shaping
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B28B17/023
Conditioning gypsum
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