72374657
Oct 29, 1970
Feb 29, 1972
TURBINE PUMPS, WATER PUMPS, CENTRIFUGAL PUMPS, CENTRIFUGAL EDUCER DEEP WELL SYSTEMS, TURBINE EDUCER DEEP WELL SYSTEMS AND PARTS THEREOF; AND WATER SYSTEMS COMPRISING A PUMPING UNIT, STORAGE TANK, AND PIPING THEREFOR; SHALLOW AND DEEP WELL CENTRIFUGAL WATER SYSTEM PUMPS; BOILER FEED UNITS, COMPRISING A PUMPING UNIT, SUPPLY TANK, FLOAT CONTROLLED MAKE-UP VALVE, AND PIPING THEREFOR; AND CONDENSATION RETURN UNITS, COMPRISING A PUMPING UNIT, SUPPLY TANK, FLOAT CONTROLLED SWITCH AND PIPING THEREFOR
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