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All Patents in class 74/838
Patents 1 - 4 of 4
First set of recordsLast set of records
7,964Mar. 04, 1851H. WatermanVariable Cut-Off Regulated by the Governorsteam engine governors
164,736Jun. 22, 1875J.L. HewesImprovement in valve-gears for steam-enginessteam engines
302,835Jul. 29, 1884H.F. FrisbieValve Gear for Puppet Valve Enginessteam engine valve gear
2,444,159Jun. 29, 1948L.E. GodfriauxFluid Pumpreciprocating pumps
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