71661875
Mar 2, 1954
Nov 22, 1955
WATER AND FEED-WATER HEATERS, STEAM PURIFIERS USED AS BOILER ADJUNCTS FOR REMOVING WATER FROM STEAM AND CONTINUOUS BLOW-OFF SYSTEMS HAVING A FLASH TANK AND/OR HEAT EXCHANGER FOR REMOVING CONCENTRATED LIQUIDS FROM BOILERS (BUT ONLY WHEN SAID GOODS ARE USED IN APPARATUS FOR THE CONDITIONING OF BOILERFEED WATER)
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