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| Patents for John E. Plummer | |||||
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| Number | Date | Patentee | Title | Type | |
| 70,894 | Nov. 12, 1867 | J.E. Plummer | Edge-plane | edge planes | |
| 448,586 | Mar. 17, 1891 | J.E. Plummer | Gage for Sorting Leather | special purpose gauges | |