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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
F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
F22D5/04—Controlling water feed or water level; Automatic water feeding or water-level regulators with pivoting buckets
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FR418919A1909-06-251910-06-24Appareil pour l'alimentation automatique des chaudières
ExpiredFR418919A
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