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F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
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FR689957D1929-04-301930-02-14Perfectionnements aux dispositifs de démarrage pour moteurs à combustion interne démarrant avec de l'air comprimé
ExpiredFR689957A
(fr)