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All Patents of Type: handheld power drills
Patents 1 - 15 of 106
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NumberDatePatenteeTitleType
255,236Mar. 21, 1882C.E. BallElectric drillhandheld power drills
507,752Oct. 31, 1893C.H. PeckPortable drilling-machinehandheld power drills
676,043Jun. 11, 1901J.C. LincolnElectric drillhandheld power drills
752,223Feb. 16, 1904C.S. HiseyVariable-speed mechanismhandheld power drills
805,499Nov. 28, 1905S.D. StoycheffElectric drillhandheld power drills
805,838Nov. 28, 1905P. BroadbooksCombination Drill and Drill Framehandheld power drills
866,922Sep. 24, 1907W.O. DuntleyEnginepneumatic tools
871,086Nov. 12, 1907W.O. Duntley, G.H. HayesEnginepneumatic tools
D38,945Dec. 10, 1907E.F. SmithDesign for a housing for electric drillshandheld power drills
904,851Nov. 24, 1908W.O. Duntley, H.J. KimmanController for electric drillshandheld power drills
908,726Jan. 05, 1909F.J. BackscheiderPortable electric toolhandheld power drills
912,655Feb. 16, 1909W.O. DuntleyPneumatic-tool handlepneumatic tools
991,431May 02, 1911W.O. DuntleyController for electric drillshandheld power drills
993,352May 30, 1911W.O. DuntleyElectric drillhandheld power drills
1,010,975Dec. 05, 1911W.C. Buege, G. StronerTool holderhandheld power drills
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