71548373
Jan 30, 1948
Jul 11, 1950
LIQUID TREATING APPARATUS AND EQUIPMENT, IN PARTICULAR CLARIFIERS AND COAGULATING APPARATUS FOR CLARIFYING TURBID LIQUIDS, FOR COAGULATING SUSPENDED AND COLLOIDAL SUBSTANCES FROM WATER, AQUEOUS WASTES AND LIQUIDS IN GENERAL, AND FOR CHEMICALLY TREATING WATER SUPPLIES AND AQUEOUS WASTES
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