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| Patents for Elihu H. Thomas | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,988X | Feb. 07, 1828 | J.C. Holbrook, E.H. Thomas | Printing press | printing presses | |
| 4,989X | Feb. 07, 1828 | E.H. Thomas, J.C. Hollbrook | Printing press (second patent, same day) | printing presses | |
| 6,089X | Aug. 11, 1830 | E.H. Thomas, N. Woodcock | Pulp dresser | ||