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F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
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FR469931D1913-04-041914-03-21Perfectionnements apportés aux soupapes telles, notamment, que celles pour moteurs à fluide sous pression
ExpiredFR469931A
(fr)