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All Patents of Type: handheld drills
Patents 1 - 15 of 87
First set of recordsNext set of recordsLast set of records
255,236Mar. 21, 1882C.E. BallElectric drillhandheld drills
507,752Oct. 31, 1893C.H. PeckPortable drilling-machinehandheld drills
676,043Jun. 11, 1901J.C. LincolnElectric drillhandheld drills
752,223Feb. 16, 1904C.S. HiseyVariable-speed mechanismhandheld drills
805,499Nov. 28, 1905S.D. StoycheffElectric drillhandheld drills
805,838Nov. 28, 1905P. BroadbooksCombination Drill and Drill Frameportable metal drilling machines
866,922Sep. 24, 1907W.O. DuntleyEnginepneumatic tools
871,086Nov. 12, 1907G.H. Hayes, W.O. DuntleyEnginepneumatic tools
D38,945Dec. 10, 1907E.F. SmithDesign for a housing for electric drillshandheld drills
904,851Nov. 24, 1908W.O. Duntley, H.J. KimmanController for electric drillshandheld drills
908,726Jan. 05, 1909F.J. BackscheiderPortable electric toolhandheld drills
912,655Feb. 16, 1909W.O. DuntleyPneumatic-tool handlepneumatic tools
991,431May 02, 1911W.O. DuntleyController for electric drillshandheld drills
993,352May 30, 1911W.O. DuntleyElectric drillhandheld drills
1,010,975Dec. 05, 1911G. Stroner, W.C. BuegeTool holderhandheld drills
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