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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
B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
B07B13/07—Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement
NL1111A1911-09-021912-09-02Verbetering aan een toestel voor het schoonmaken van vruchten, groenten, zaden en dergelijke
NL592C
(nl)