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All Patents of Type: grinders
Patents 1 - 15 of 176
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NumberDatePatenteeTitleType
8,224XMay 28, 1834J. WheatonElliptical Spindle Grindergrinders
3,105May 26, 1843T. FairbanksDischarging Dust from Grinding Wheelsgrinders
72,636Dec. 24, 1867W.C. HicksGrinding and Polishing Concave Surfacespolishing and buffing machinery
81,608Sep. 01, 1868J.P. CurtissMachine for Grinding Metal Articlesgrinders
81,611Sep. 01, 1868J.W. DouglasGrindstone Framegrinders
103,242May 17, 1870J. ShaughnessyImprovement in Tool Grinding Attachment for Lathesgrinders
105,392Jul. 12, 1870W.L. WashburnGrinding Apparatusgrinders
124,134Feb. 27, 1872C. HeatonImprovement in cowls for emery-wheelsgrinders
130,014Jul. 30, 1872C. BurkholderImprovement in Grindstonesgrinders
145,488Dec. 16, 1873P.D. CummingsGrinding Machinesgrinders
193,437Jul. 24, 1877V.F. Prentice, E.J. WorcesterImprovement in machines for grinding mower and reaper knivesgrinders
197,711Nov. 27, 1877E.J. WorcesterImprovement in machines for grinding lawn-motor cuttergrinders
205,416Jun. 25, 1878F.D. Randall, L.D. DanaImprovement in Grinding-Machinesgrinders
248,744Oct. 25, 1881B. HolmesMachine for grinding steel barsgrinders
251,141Dec. 20, 1881F.M. SimmonsMachine for grinding pulleysgrinders
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