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| Patents for J. P. Pirsson | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,111 | Feb. 19, 1850 | H. Wood | Burning ornamental figures upon wood | wood ornamenting machines | |
| 10,473 | Jan. 31, 1854 | E.W. Johnson | Sawmill | reciprocating sawmills | |