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All Patents in class 451/284
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
39,817Sep. 08, 1863L.A. JohnsonLathe for turning billiard ballswood lathes
49,122Aug. 01, 1865J.L. KnowltonImproved machine for rounding and polishing balls
52,244Jan. 23, 1866C. ForsterImprovement in Lathes for Turning Spherical Shot and Shellcannons
363,994May 31, 1887T. DraperBall Turning Lathewood lathes
365,407Jun. 28, 1887H. RichardsonMachinery for grinding spherical ballsgrinders
372,460Nov. 01, 1887T. DraperBall Turning Lathewood lathes
379,307Mar. 13, 1888R.B. CodlingLathewood lathes
422,966Mar. 11, 1890W.D. OrmsbyMachine for Grinding Spherical Ballsgrinding machines
520,019May 15, 1894R.H. GrantGrinding-machinegrinders
1,252,365Jan. 01, 1918O.W. SchaumBall Grinding Machine
1,264,930May 07, 1918L.R. HeimRoll Grinding Machine
1,707,708Apr. 02, 1929J.E. CasterProcess for the Production of Spherical Articlesgrinding machines
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