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All Patents of Type: drill accessories
Patents 1 - 15 of 78
First set of recordsNext set of recordsLast set of records
19,829Apr. 06, 1858J. Quigley, N. ClareReamer/Plug Cutter Attachmentdrill accessories
21,961Nov. 02, 1858W.O. HickokDie for Cutting Wooden Screwsdrill accessories
51,248Nov. 28, 1865W.C. WellsDrill Gagemeasurement gauges
54,825May 15, 1866G.W. WaitImprovement in Tools for Making Spilesdrill accessories
62,754Mar. 12, 1867T.C. KeithAuger Chip Clearing Accessorydrill accessories
76,123Mar. 31, 1868W.C. WellsDrill Gagedrill accessories
92,927Jul. 27, 1869A. AmoryImprovement in guide-attachments for boring-instrumentsdrill accessories
95,964Oct. 19, 1869J.S. ZerbeeImprovement in Combination Toolscountersinks
115,587Jun. 06, 1871R.H. DornImprovement in circular cuttersdrill accessories
117,594Aug. 01, 1871C.W. BealsImprovement in Devices for Resetting Old Auger-Bitsdrill accessories
139,487Jun. 03, 1873A.C. TraftonDrill Gagedrill accessories
156,602Nov. 03, 1874H. SmithRatchet-Drillsdrill accessories
195,877Oct. 09, 1877D.F. BarberImprovement in Countersinkscountersinks
303,368Aug. 12, 1884A.G. GoldthwaitDrill Gagedrill accessories
333,418Dec. 29, 1885E.F. LindseyCounterboring Attachment for Bitscountersinks
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