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| Patents for S. D. Law | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 17,833 | Jul. 21, 1857 | J. Hall | Feed-roller for planing machines, &c. | |
 | 32,137 | Apr. 23, 1861 | D. Mann | Improvement in Rotary Spading-Machines | |