71542738
Oct 24, 1947
Jul 18, 1950
APPARATUS FOR THE TREATMENT OF SOLIDS SUSPENDED IN LIQUIDS-NAMELY, THICKENERS, TRAY THICKENERS, CLARIFIERS, AGITATORS, CLASSIFIERS, BOWL CLASSIFIERS, PUMPS, SEWAGE DIGESTERS, SEWAGE BAR SCREENS, VACUUM FLOTATION MACHINES, HYDROSEPARATORS, WASHERS, CONVEYERS, AND SLURRY MIXERS
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