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| Patents for J. A. Hall | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,090 | Jul. 06, 1852 | E. Valentine, A. Bradway | Construction of Bridges | ||
| 1,192,021 | Jul. 25, 1916 | W.S. Thomson | End Cutting Pliers | pliers | |