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| Patents for James H. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 218,802 | Aug. 19, 1879 | R.H. Hurlbut, S. Moore, J.H. Williams | Surface Measuring Machine | measurement gauges | |
| 377,795 | Feb. 14, 1888 | J.H. Williams | Chain Wrench | chain and strap wrenches | |
| 678,569 | Jul. 16, 1901 | R.H. Hurlbut | Cutting-off mechanism | cutting-off and centering machines | |
| 1,337,678 | Apr. 20, 1920 | J.H. Williams | Wrench | self-adjust wrenches | |