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| Patents for Simon Willard Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 757X | Apr. 25, 1807 | S. Willard, Jr. | Washing machine | washing machines | |
| 808X | Nov. 30, 1807 | S. Willard, Jr. | Thrashing and cleaning grain | miller | |
| 5,180X | Aug. 02, 1828 | S. Willard, Jr. | Washing machine | washing machines | |