| Patents for Helen Orford |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 714,881 | Dec. 02, 1902 | W.L. Emmet | Clamping-finger | motor stators |
| 784,807 | Mar. 14, 1905 | H.G. Reist | Dynamo-electric machine | electric motors |
| 859,336 | Jul. 09, 1907 | J. Riddell | Double Acting Tool for Planers and Shapers | metal shaper tools |
| 882,602 | Mar. 24, 1908 | H.E. White | Controlling-Switch | motor controls |
| 897,475 | Sep. 01, 1908 | M. Milch | Alternating-current motor | electric motors |
| 928,037 | Jul. 13, 1909 | W.H. Frost | Dynamo-electric machine | motor armatures |
| 1,041,859 | Oct. 22, 1912 | T.W. Nowell | Motor Controlling Device | motor controls |
| 1,121,014 | Dec. 15, 1914 | H.M. Hobart | Electrical apparatus | electrical devices |
| 1,135,327 | Apr. 13, 1915 | M.A. Savage | Dynamo-electric machine | motor cooling |
| 1,194,923 | Aug. 15, 1916 | E.F. Alexanderson | Alternating-current commutator-motor | AC motors |
