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| Patents Granted on 1822-10-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,603X | Oct. 30, 1822 | H.G. Spafford | Art of making cast and wrought steel | steel maker | |
| 3,604X | Oct. 30, 1822 | H.G. Spafford | Making iron and steel | steel maker | |