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| Patents for W. A. Merrifield | |||||
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| Number | Date | Patentee | Title | Type | |
| 471,345 | Mar. 22, 1892 | D.C. Stover | Grinding Mill | grinding mills | |
| 542,694 | Jul. 16, 1895 | F.W. Hoefer, D.C. Stover | Sensitive drill press | drill presses | |