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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
F22D7/00—Auxiliary devices for promoting water circulation
F22D7/04—Injectors for water or steam
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FR645884D1927-12-191927-12-19Perfectionnements aux chaudières à tubes d'eau et échangeurs de température similaires
ExpiredFR645884A
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