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All Patents in class 408/124
Patents 16 - 30 of 117
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NumberDatePatenteeTitleType
195,882Oct. 09, 1877H.C. BullMachine for Boring Gun Barrelshorizontal drilling machines
202,477Apr. 16, 1878T.O. SelfridgeImprovement in wood-boring machineseggbeater drills
231,361Aug. 17, 1880W.H. RichardsRatchet Drillratchet drills
246,710Sep. 06, 1881G.W. BeanBack-gear clutch for upright drillsindustrial machine clutches
274,026Mar. 13, 1883O. PlummerPost for drilling machineswoodworking post drills
319,502Jun. 09, 1885G.G. MorrisonCombined Drilling and Boring Machinedrilling and boring
324,100Aug. 11, 1885J. ErnstBoring machinewood drilling and boring
364,254Jun. 07, 1887J.B. HigdonWood-boring machinedrilling and boring
429,525Jun. 03, 1890J. HermRatchet-braceratchet braces
461,800Oct. 20, 1891H.B. PullmanTapping Devicetap and die holders
462,309Nov. 03, 1891W.E. GangDrill Pressdrill presses
495,656Apr. 18, 1893G. BeekmanMechanical movementhand drills
506,954Oct. 17, 1893J.G. Timolat, C. JacobsonPortable drillportable metal boring and drilling machines
521,327Jun. 12, 1894E.E. AnthonyBrace-drillbraces
531,382Dec. 25, 1894F.C. McClaryReversing Tap Holdertap and die holders
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