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All Patents in class 91/270
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
67,659Aug. 13, 1867N.A. Otto, E. LangenGas Enginegas and gasoline engines
93,125Jul. 27, 1869C.E. RymesValve gear for rotary valvessteam engine valve gear
359,865Mar. 22, 1887E. HillValve Gearsteam engine valve gear
417,653Dec. 17, 1889J.B. StanwoodSteam-enginesteam engine valve gear
425,219Apr. 08, 1890N.T. GreeneExhaust-valve-gear for enginessteam engine valve gear
533,290Jan. 29, 1895J.D. GrayDirect-acting steam-enginesteam engines
548,753Oct. 29, 1895N.T. GreeneSteam Enginesteam engines
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