| All Patents of Type: handheld power tools |
Patents 1 -
15
of 172
      |
| Number | Date | Patentee | Title | Type |
| 698,418 | Apr. 22, 1902 | R.F. Sprague | Power-driven tool | handheld power tools |
| 712,537 | Nov. 04, 1902 | C.S. Hisey | Electric grinding device | handheld power tools |
| 750,744 | Jan. 26, 1904 | J.F. Willey | Portable drill | handheld power tools |
| 781,062 | Jan. 31, 1905 | D.J. Hauss, C.W. Miles | Electric or hand-powered breast drill | handheld power tools |
| 809,394 | Jan. 09, 1906 | A. Pedersen | Electrically-operated portable drill | handheld power tools |
| 810,444 | Jan. 23, 1906 | C.W. Theil | Electric drill | handheld power tools |
| 894,228 | Jul. 28, 1908 | W.D. Price, J.A. Dreher, A.E. Welker | Boring machine | drilling and boring |
| 956,849 | May 03, 1910 | W.C. Hafemeister | Portable electric drill | handheld power tools |
| 967,190 | Aug. 16, 1910 | L.A. Hauck | Switch for electric tools | handheld power tools |
| 979,143 | Dec. 20, 1910 | E.F. Faure | Controlling device for electrical apparatus | handheld power tools |
| 1,099,392 | Jun. 09, 1914 | R.A. Norling | Pneumatic-turbine drill | pneumatic tools |
| 1,124,393 | Jan. 12, 1915 | G.H. Coates | Hammer powered by flexible shaft | handheld power tools |
| 1,172,169 | Feb. 15, 1916 | F. Schneider | Electrically-operated tool | handheld power tools |
| 1,195,861 | Aug. 22, 1916 | E.F. Smith | Manufacture and construction of commutators | handheld power tools |
| 1,199,917 | Oct. 03, 1916 | H.W. Oster | Portable tool-turning machine | metal threading machines |
