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All Patents in class 310/50
Patents 1 - 15 of 73
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NumberDatePatenteeTitleType
606,549Jun. 28, 1898E. HolmesPortable electric drillhandheld power tools
750,744Jan. 26, 1904J.F. WilleyPortable drillhandheld power tools
781,062Jan. 31, 1905D.J. Hauss, C.W. MilesElectric or hand-powered breast drillhandheld power tools
809,394Jan. 09, 1906A. PedersenElectrically-operated portable drillhandheld power tools
810,444Jan. 23, 1906C.W. TheilElectric drillhandheld power tools
956,849May 03, 1910W.C. HafemeisterPortable electric drillhandheld power tools
979,143Dec. 20, 1910E.F. FaureControlling device for electrical apparatushandheld power tools
1,004,437Sep. 26, 1911A. KimbleAlternating-current motorelectric motors
1,026,904May 21, 1912J. BurkeElectric motorblowers
1,062,799May 27, 1913G.H. RoweRock drillminer
1,172,169Feb. 15, 1916F. SchneiderElectrically-operated toolhandheld power tools
1,229,401Jun. 12, 1917S.D. Black, A.G. DeckerDrill gearinghandheld power tools
1,245,860Nov. 06, 1917S.D. Black, A.G. DeckerElectrically-driven toolhandheld power tools
1,411,538Apr. 04, 1922A.H. SweetlandHand drillhandheld power drills
1,445,294Feb. 13, 1923H.P. CampElectric hand drillhandheld power drills
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