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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
F01N1/00—Silencing apparatus characterised by method of silencing
F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
F01N1/18—Silencing apparatus characterised by method of silencing by using movable parts having rotary movement
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FR689963D1929-02-151930-02-14Silencieux pour moteurs à combustion interne
ExpiredFR689963A
(fr)