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NICOLAS TVERSKOY
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NICOLAS TVERSKOY
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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
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FR336201D1903-10-211903-10-21Nouveau système pour l'alimentation des chaudières tubulaires
ExpiredFR336201A
(fr)