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| Patents for Benjamin K. Hill | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,670X | Feb. 17, 1827 | B.K. Hill | Machine for grinding clay for brick | brick maker | |
| 4,671X | Feb. 17, 1827 | B.K. Hill | Machine for mixing earth for bricks | brick and tile making machines | |