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| Patents for Ezra Weld | |||||
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| Number | Date | Patentee | Title | Type | |
| 253X | Jun. 26, 1799 | E. Weld | Improvement in washing clothes | ||
| 301X | Sep. 17, 1800 | E. Weld | Clothes Washer | washing machines | |
| 558X | May 16, 1804 | E. Weld | Machine for making salt | salt making apparatus | |