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| All Patents in class 114/144R | |||||
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| Picture | Number | Date | Patentee | Title | |
| 613,809 | Nov. 08, 1898 | N. Tesla | Method of and Apparatus for Controlling Mechanism of Moving Vessels or Vehicles | ||
| 714,786 | Dec. 02, 1902 | M.W. Day | Controlling Electric Motors | ||
 | 810,634 | Jan. 23, 1906 | H.L. Flather | Change Speed Gearing for Lathes | |
| 2,338,763 | Jan. 11, 1944 | E.A. Hall, R.S. Beverlin | Portable Grinding Machine | ||