| Patents for William O. Duntley |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
 | 764,282 | Jul. 05, 1904 | W.O. Duntley | Battery-cell |
 | 866,922 | Sep. 24, 1907 | W.O. Duntley | Engine |
 | 871,086 | Nov. 12, 1907 | W.O. Duntley, G.H. Hayes | Engine |
| | 904,851 | Nov. 24, 1908 | W.O. Duntley, H.J. Kimman | Controller for electric drills |
 | 910,798 | Jan. 26, 1909 | W.O. Duntley | Electric hoist |
 | 912,655 | Feb. 16, 1909 | W.O. Duntley | Pneumatic-tool handle |
| | 991,431 | May 02, 1911 | W.O. Duntley | Controller for electric drills |
| | 993,352 | May 30, 1911 | W.O. Duntley | Electric drill |
 | 1,109,325 | Sep. 01, 1914 | W.O. Duntley | Electric drill |
