71589298
Dec 14, 1949
Aug 14, 1951
FILTERING APPARATUS IN THE NATURE OF INDUSTRIAL FILTER PRESSES, INDUSTRIAL SLURRY FILTERS, FILTER DUST COLLECTORS, AND OIL REMOVAL FILTERS; WATER CONDITIONING APPARATUS IN THE NATURE OF ZEOLITE WATER CONDITIONERS, LIME-SODA WATER CONDITIONERS, AND DEIONIZING WATER CONDITIONERS; AND PARTS THEREOF
Natural Agricultural Products