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| Patents for John Knapp | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,501X | Mar. 30, 1833 | S. Couillard, Jr. | Clearing wool of burs | textile machines | |
| 5,457 | Feb. 22, 1848 | H. Wood | Mechanism for Blacksmiths and Woodworkers Leg Vise | leg vises | |