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| Patents for William E. Arnold | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,597X | Aug. 03, 1829 | W.E. Arnold | Clothes Washing Machine | washing machines | |
| 5,773X | Jan. 11, 1830 | W.E. Arnold | Washing machine | washing machines | |
| 6,546X | May 07, 1831 | W.E. Arnold | Applying Horse Power to Mechanical Purposes | animal powered apparatus | |
| 8,689X | Mar. 13, 1835 | W.E. Arnold | Horse Power | animal powered apparatus | |
| 12,500 | Mar. 13, 1855 | W.E. Arnold | Sash Fastener | ||