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F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
F01B2250/00—Accessories of steam engines; Arrangements or control devices of pumps, compressors or condensers, insofar as they influence the functioning of the steam engines
F01B2250/003—Apparatus for controlling receiver or condenser pressure
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FR558528D1921-11-181922-11-10Perfectionnements aux appareils servant à indiquer le rendement d'un condenseur de vapeur
ExpiredFR558528A
(fr)