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| Patents Granted on 1800-05-19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 290X | May 19, 1800 | E. West | Metal amulets | medical devices | |
| 291X | May 19, 1800 | T.O. Harrison | Machine for Splitting Hides and Skins | splitting and shearing machinery | |
| 292X | May 19, 1800 | R. Smith | Mould board plow | plows | |