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| Patents for William Hart | |||||
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| Number | Date | Patentee | Title | Type | |
| 15,073 | Jun. 10, 1856 | W. Hart | Combination Hand Vise and Calipers | calipers | |
| 23,355 | Mar. 29, 1859 | W.H. Crittendon | Sawing-machine | reciprocating sawmills | |