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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
F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
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FR476283D1914-10-121914-10-12
Improvements to auxiliary exhaust valves for internal combustion engines
ExpiredFR476283A
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