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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B28B7/10
Moulds with means incorporated therein, or carried thereby, for ejecting; or detaching; the moulded article
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B28B7/12
by fluid pressure; , e.g. acting through flexible wall parts or linings of the moulds
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