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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13/00
Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
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B07B13/16
Feed or discharge arrangements
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