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| Patents for Harvey D. Williams | |||||
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| Picture | Number | Date | Patentee | Title | |
| 580,097 | Apr. 06, 1897 | H.D. Williams | Governor for Water Motor | ||
| 580,098 | Apr. 06, 1897 | H.D. Williams | Governor for Water Motors | ||
| 580,099 | Apr. 06, 1897 | H.D. Williams | Governor for Water Motors | ||
 | 613,950 | Nov. 08, 1898 | E.C. Lewis, H.G. Hoadley, H.D. Williams | Lever and Ratch Attachment | |
 | 658,478 | Sep. 25, 1900 | H.G. Hoadley, H.D. Williams | Mechanical Movement | |
| 925,148 | Jun. 15, 1909 | H.D. Williams | Variable Speed Gear | ||