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All Patents of Type: drill accessories
Patents 1 - 15 of 106
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
55,132May 29, 1866S.L. LyfordImprovement in Gages for Augersdrill depth stops
62,754Mar. 12, 1867T.C. KeithAuger Chip Clearing Accessorydrill accessories
62,849Mar. 12, 1867T. HofstatterImprovement in Augerscountersinks
74,466Feb. 11, 1868W.E. WhitingImprovement in Gauges for Augersdrill depth stops
76,123Mar. 31, 1868W.C. WellsDrill Gagedrill accessories
80,915Aug. 11, 1868L. ColtAugerdrill depth stops
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
116,901Jul. 11, 1871A. WheelerImprovement in Gauges for Countersinksdrill depth stops
117,594Aug. 01, 1871C.W. BealsImprovement in Devices for Resetting Old Auger-Bitsdrill accessories
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