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| Patents for William Bancroft | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,780 | Oct. 09, 1849 | E. Bancroft | Hanging shafts in mills | industrial machine shaft hangers | |
| 17,641 | Jun. 23, 1857 | W. Sellers | Boring and Drilling | portable metal boring and drilling machines | |