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All Patents in class 451/292
Patents 1 - 12 of 12
First set of recordsLast set of records
1,203,844Nov. 07, 1916A.C. Page, C. BoothGrinding Machinegrinding machines
1,263,057Apr. 16, 1918J.T. GriffinMica Grinding Machine
1,264,928May 07, 1918L.R. HeimDevice for Feeding Rolls for End Grinding
1,519,611Dec. 16, 1924F.E. GardnerGrinding machinedisk sanders
1,523,952Jan. 20, 1925R.D. Gardner, J. Nielsen, E.B. GardnerGrinding machinedisk sanders
1,530,488Mar. 24, 1925F.E. GardnerGrinding machinedisk sanders
1,531,282Mar. 31, 1925F.E. GardnerGrinding machinedisk sanders
1,576,820Mar. 16, 1926F.E. GardnerGrinding machinedisk sanders
1,651,382Dec. 06, 1927E.B. Gardner, J. Nielsen, R.D. GardnerGrinding machine
1,909,614May 16, 1933E.B. GardnerRotary grinding machine
2,105,872Jan. 18, 1938A.L. WarnerGrinding machine
2,821,818Feb. 04, 1958W.S. Swanson, H.E. McGeeLapping Machine and Automatic Feed Mechanism Thereforlapping machines
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