Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B07
SEPARATING SOLIDS FROM SOLIDS; SORTING
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B07B
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
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4/00
Separating solids from solids by subjecting their mixture to gas currents
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