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All Patents in class 266
Patents 16 - 30 of 43
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125,650Apr. 09, 1872J.A. WoodburyImprovement in Tempering Steel Railrod Railstrack and switches
125,651Apr. 09, 1872J.A. WoodburyTempering the Treads of Car Wheelsrailroad car wheels
150,289Apr. 28, 1874W. ClemsonImprovement in apparatus for tempering sawsmaking sawblades
153,115Jul. 14, 1874I.J. RobinsonImprovement in processes for tempering the blades of squarescarpenter squares
343,358Jun. 08, 1886W.B. BarryApparatus for tempering sawstool making machines
348,888Sep. 07, 1886J.M. ChambersApparatus for Heating and Drying Barrelsbarrel making machines
482,001Sep. 06, 1892B. BrazelleProcess of and apparatus for purifying, refining, and carburizing metals
529,476Nov. 20, 1894B. BrazelleProcess of and apparatus for smelting ores
988,950Apr. 04, 1911J. RosselSkirt-Board Scriberscribes
1,150,512Aug. 17, 1915J.H. FryerApparatus for annealing malleable-iron castingsfoundryman
1,253,966Jan. 15, 1918F.W. HarrisProcess and Apparatus for Treating Drill Pipeoilfield machinery
1,265,944May 14, 1918C. NapierProcess of and Apparatus for Heat Treatment of Metal Objectsheat treating machines
1,769,053Jul. 01, 1930T.W. ClarkFurnace
1,866,827Jul. 12, 1932F.J. VlchekManufacture of Swaged and Tempered Articlesmetalworking machines
1,906,092Apr. 25, 1933G.S. PetersonConveyer furnace
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