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| Patents for Amasa Norcross | |||||
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| Number | Date | Patentee | Title | Type | |
| 16,846 | Mar. 17, 1857 | S.K. Lovewell | Improvement in fire-arms | cannons | |
| 49,553 | Aug. 22, 1865 | S. Sawyer, E.E. Safford | Improved Adjustable Center-Punch | center punches | |