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All Patents in class 144/92
Patents 1 - 15 of 43
First set of recordsNext set of recordsLast set of records
8,877XJun. 12, 1835W. JonesAugerauger bits
57,536Aug. 28, 1866J. McCrumDrilling attachment for turning-lathesdrilling and boring
58,568Oct. 09, 1866R. AllisonImprovement in boring-machinesdrilling and boring
68,362Sep. 03, 1867W.D. GrimshawImproved drilling machinedrilling and boring
79,000Jun. 16, 1868G. RaftWrist-Pin Turnerdrilling and boring
97,908Dec. 14, 1869G.A. Gray, Jr.Improved radial drilling-machinedrilling and boring
101,466Apr. 05, 1870J.E. HunterImproved hand drilling-machinehuman powered machines
105,930Aug. 02, 1870V. FolandImprovement in traversing machinehuman powered machines
123,886Feb. 20, 1872W. Gardam, J. GardamImprovement in drilling-machinesdrilling and boring
124,647Mar. 12, 1872J. WheelockImprovement in Boring-Millsdrilling and boring
134,237Dec. 24, 1872C.H. AmidonImprovement in drillseggbeater drills
140,925Jul. 15, 1873J.C. KellerImprovement in metal-drilling machinesdrill presses
244,629Jul. 19, 1881W.F. LeachPortable steam-augerdrilling and boring
248,913Nov. 01, 1881H.H. ChapmanDrilling-machinedrilling and boring
249,133Nov. 01, 1881R.T. WhiteRouting-machinerouting machines
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