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| Patents Granted on 1834-05-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,200X | May 15, 1834 | L. Copley | Applying water, wind, or steam to a mill or machine wheel | wind power apparatus | |
| 8,201X | May 15, 1834 | L. Cutting | Stop motion of the drawing frame | spinner | |
| 8,202X | May 15, 1834 | B. Dugdale | Water wheel | water wheels | |
| 8,203X | May 15, 1834 | J.D. Prescott | Cultivating and tilling the ground | cultivators and tillers | |