72000563
Jan 12, 1956
Jul 3, 1956
WATER CONDITIONING AND FILTERING APPARATUS FOR BOTH HOME AND COMMERCIAL ION-EXCHANGE TYPE; FILTERS FOR REMOVING SEDIMENT, APPARATUS FOR CHEMICALLY TREATING WATER SUPPLY SYSTEMS GENERALLY AND FOR TREATING BOILER AND HOT WATER SUPPLY SYSTEMS, FOR SUPPLYING CHEMICALS TO WATER SUPPLY SYSTEMS; AND AUTOMATIC WATER FLOW CONTROL DEVICES
Natural Agricultural Products