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| Patents for Joshua Butters | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,200X | May 03, 1820 | J. Butters, E. Howard | Machine for splitting leather | splitting and shearing machinery | |
| 3,534X | May 31, 1822 | J. Butters | Machine for splitting leather | splitting and shearing machinery | |