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F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
F22D1/24—Feed-water heaters, i.e. economisers or like preheaters with fire tubes or flue ways traversing feed-water vessels
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FR620560D1926-08-231926-08-23
Improvements in processes and apparatus for reheating feed water in steam boilers
ExpiredFR620560A
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