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All Patents in class 266
Patents 31 - 45 of 75
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NumberDatePatenteeTitleType
988,950Apr. 04, 1911J. RosselSkirt-Board Scriberscribes
1,150,512Aug. 17, 1915J.H. FryerApparatus for annealing malleable-iron castingsfoundryman
1,221,576Apr. 03, 1917C. NapierManufacture of tempered saw-bladesmaking sawblades
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
1,327,881Jan. 13, 1920C.H. RothTool or Cutter Headmetal planer tool holders
1,333,767Mar. 16, 1920C. NapierMethod of making tempered bladesmaking sawblades
1,350,618Aug. 24, 1920C. NapierApparatus for making tempered bladesmaking sawblades
1,495,994Jun. 03, 1924J. FarmerMetal Burning Apparatustorches
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
1,944,798Jan. 23, 1934W. MellorMeans for Quenching Steels
2,129,463Sep. 06, 1938E.P. BullardStation Type Treatment Machine
2,157,948May 09, 1939H.H. BeenyHardening of Metal Surfacesflame hardening machines
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