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B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
FR571089D1922-12-021922-12-02
Process for the extraction of plant, animal or other tissues, of particular products usable in industry
ExpiredFR571089A
(en)