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All Patents in class 451/369
Patents 1 - 15 of 21
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NumberDatePatenteeTitleType
29,512Aug. 07, 1860E.W. NicholsHolder for Polishing-Wheelsbench or pedestal grinders
79,246Jun. 23, 1868M.V. Collins, M.M. MorseEdge Tool Grindertool grinders
96,066Oct. 19, 1869E.A. WhiteGrinding Metal Platessurface grinders
147,297Feb. 10, 1874F. WhiteImprovement in sharpening-machinessharpening machines
158,172Dec. 29, 1874C.H. Hill, A.W. ProctorImprovement in machine for grinding knivescutter grinding
243,770Jul. 05, 1881J.E. Woodbridge, F.N. GardnerHolder for Grinding Toolsgrinding attachments
348,497Aug. 31, 1886G.A. LongTool-holder for grindingwoodworking machine sharpening mechanisms
417,001Dec. 10, 1889A.E. CreighAutomatic knife-grindercutterhead sharpening machines
425,781Apr. 15, 1890W.D. Graves, Jr.Knife-grinding machinesharpening machines
460,497Sep. 29, 1891J.S. BancroftTool Grinding Machinetool grinders
504,000Aug. 29, 1893M.M. Aust, C.P. ThielMachine for Grinding Thread Cutting Toolstool grinders
507,634Oct. 31, 1893S.C. RogersKnife-grindersharpening machines
646,397Mar. 27, 1900W.H. Thorne, J.S. BancroftGrinding-Machinetool grinders
664,512Dec. 25, 1900J.B. WallaceChaser Grinding Machinesharpening machines
904,817Nov. 24, 1908F. StutzmanUniversal grinding-machinebench or pedestal grinders
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