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| Patents for William A. Herrick | |||||
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| Picture | Number | Date | Patentee | Title | |
 | FX-8,989 | Jul. 21, 1835 | W.A. Herrick | Churn | |
| 8,989X | Jul. 21, 1835 | W.A. Herrick | Rotary spiral spring float steam engine | ||