A List of Some X-Patents
| Patent | Invention | Inventor | Date | Link | Notes |
|---|---|---|---|---|---|
| 1X | Potash production | Samuel Hopkins | July 31, 1790 | U.S. Patent X1 | First U.S. patent |
| 72X | Cotton Gin | Eli Whitney | March 14, 1794 | U.S. Patent X72 | Revolutionized cotton farming and textiles industry |
| 4378X | Gas Or Vapor Engine | Samuel Morey | April 1, 1826 | U.S. Patent X4,378 | |
| 9000X | Grate | N. Winslow | July 2, 1836 | U.S. Patent X9,000 | |
| 9430X | Improvement in Fire-Arms | Samuel Colt | February 25, 1836 | U.S. Patent X9,430 | A key patent in revolver history |
| 9899X | Brick Machine | C. Waterman | July 2, 1836 | U.S. Patent X9,899 | |
| 9894X | Plow Moldboard | I. Snider | July 2, 1836 | U.S. Patent X9,894 | |
| 9893X | Lock | A. Roff | July 2, 1836 | U.S. Patent X9,893 | |
| 9890X | Thrashing Mach. | A. Parson | July 2, 1836 | U.S. Patent X9,890 | |
| 9889X | Cook Stove | W. Parmalee | July 2, 1836 | U.S. Patent X9,889 | |
| 9887X | Plow | T. Miller | July 2, 1836 | U.S. Patent X9,887 | |
| 9886X | Dressing Stares | C. McGregory | July 2, 1836 | U.S. Patent X9,886 | |
| 9885X | Cotton Gin | J. McCreight | July 2, 1836 | U.S. Patent X9,885 | |
| 9884X | Door Lock | J. Mo Clory | July 2, 1836 | U.S. Patent X9,884 | |
| 9882X | Clover Huller | W. Loomis | July 2, 1836 | U.S. Patent X9,882 | |
| 9879X | Feather Dresser | F.P.Knowlton | July 2, 1836 | U.S. Patent X9,879 | |
| 9878X | Platform Balance | J. Horton | July 2, 1836 | U.S. Patent X9,878 | |
| 9877X | Nail Extractor | R. Haynes | July 2, 1836 | U.S. Patent X9,877 | |
| 9876X | Cotton Press | H.G. Guyon | July 2, 1836 | U.S. Patent X9,876 | |
| 9875X | Cook Stove | C. Granger | July 2, 1836 | U.S. Patent X9,875 |
| Wikisource has original text related to this article: U.S. Patents issued before 1836 |
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