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| Patents for John Roberts | |||||
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| Number | Date | Patentee | Title | Type | |
| 572X | Sep. 05, 1804 | J. Roberts, A.D. Allen, E. Kelsey | Machine for Cutting Chips for Chip Hats | milliner | |
| CA-18,121 | Nov. 20, 1883 | C.E. Bailey | Hand Vise And Wrench | hand vises | |
| 386,855 | Jul. 31, 1888 | W.B. Swan | Adjustable Handle Draw Knife | draw knives | |