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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1/00
Producing shaped; prefabricated; articles from the material
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B28B1/52
specially adapted for producing articles from mixtures containing fibres,; e.g. asbestos cement
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B28B1/527
by delivering the materials on a rotating drum, e.g. a sieve drum, from which the materials are picked up by a felt
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