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| Patents Granted on 1834-04-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,172X | Apr. 28, 1834 | J.A. Pitts, H.A. Pitts | Endless chain pump | chain pumps | |
| 8,173X | Apr. 28, 1834 | E. Whitman, Jr. | Whitman's roasting jack | roasting jacks | |