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All Patents of Type: pump valves
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
19,398Feb. 16, 1858G.M. Woodward, C. WoodwardPump Valvepump valves
89,344Apr. 27, 1869A.K. RiderPump Valvepump valves
206,558Jul. 30, 1878W.H. Guild, Jr.Valve Action of Duplex Engines and Pumpssteam engine valves
215,800May 27, 1879G.H. CorlissPump-Valvepump valves
229,881Jul. 13, 1880H.F. GaskillPump Valvepump valves
RE9,388Sep. 28, 1880A.K. RiderPump Valvepump valves
RE9,857Sep. 06, 1881W.H. Guild, Jr.Valve Action of Duplex Engines and Pumpssteam engine valves
276,805May 01, 1883W.H. GuildPump Valvepump valves
292,396Jan. 22, 1884C. AhrensPump-valvepump valves
491,543Feb. 14, 1893H.F. FrisbieValve for Pumpspump valves
2,157,480May 09, 1939L.A. ColeMagnetic valvepump valves
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