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F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
F01N13/00—Exhaust or silencing apparatus characterised by constructional features
F01N13/20—Exhaust or silencing apparatus characterised by constructional features having flared outlets, e.g. of fish-tail shape
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FR50391D1938-12-231938-12-23Nouveau perfectionnement aux organes d'échappement
ExpiredFR50391E
(fr)