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| Patents for William C. Marr | |||||
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| Number | Date | Patentee | Title | Type | |
| 92,983 | Jul. 27, 1869 | W.C. Marr | Improvement in combined drill and saw-gummer | saw gummers | |
| 305,090 | Sep. 16, 1884 | A.J. Maughlin, W.C. Marr | Bit-stock (unusual, geared) | geared braces | |
| 363,901 | May 31, 1887 | W.C. Marr | Wrench | screw adjust wrenches | |
| 382,712 | May 15, 1888 | W.C. Marr | Pliers | pliers | |