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All Patents in class 91/189R
Patents 1 - 9 of 9
First set of recordsLast set of records
206,558Jul. 30, 1878W.H. Guild, Jr.Valve Action of Duplex Engines and Pumpssteam engine valves
RE9,857Sep. 06, 1881W.H. Guild, Jr.Valve Action of Duplex Engines and Pumpssteam engine valves
1,975,250Oct. 02, 1934O.L. Craft, A.J. CalphaHydraulic Feed Control Apparatusmetalworking machines
2,021,388Nov. 19, 1935L.L. SchauerHydraulic arm translating means for radial drillsradial drill presses
2,511,821Jun. 13, 1950E.P. Bullard, IIIControl Mechanismmachine tool controls
2,632,482Mar. 24, 1953J.C. LincolnApparatus for Bending Sinuous Wire Strips into Springsspring making machines
2,882,760Apr. 21, 1959L.A. LeiferInfinitey Variable Incremental Feed Controlmetalworking speed changing mechanisms
3,016,804Jan. 16, 1962J.G. Osburn, F. ZanklProgram Control Systemmilling machines
3,077,132Feb. 12, 1963C.H. WhitmoreFeed control for band sawsbandsaws
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