FR490991A - Perfectionnements apportés ou relatifs aux dispositifs de circulation d'eau dans les chaudières à vapeur et les appareils analogues
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Perfectionnements apportés ou relatifs aux dispositifs de circulation d'eau dans les chaudières à vapeur et les appareils analogues
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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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FR490991D1917-08-131918-07-24Perfectionnements apportés ou relatifs aux dispositifs de circulation d'eau dans les chaudières à vapeur et les appareils analogues
ExpiredFR490991A
(fr)
Perfectionnements dans les appareils mesureurs et indicateurs de la densité de l'eau dans une chaudière à vapeur, ou la densité d'autres liquides dans les installations évaporatoires