Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B28
WORKING CEMENT, CLAY, OR STONE
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B28D
WORKING STONE OR STONE-LIKE MATERIALS
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1/00
Working stone or stone-like materials, e.g. brick, concrete; or glass; , not provided for elsewhere; Machines, devices, tools therefor
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B28D1/32
Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
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B28D1/322
Splitting of the working materials
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