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All Patents of Type: handheld drills
Patents 1 - 15 of 86
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
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
1,031,337Jul. 02, 1912G.J. HartmannFeed-wire connection for electric motorshandheld drills
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