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| Patents for William C. Marr | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 92,983 | Jul. 27, 1869 | W.C. Marr | Improvement in combined drill and saw-gummer | |
 | 177,261 | May 09, 1876 | W.C. Marr, J.S. Maughlin | Calf Weaner | |
| 305,090 | Sep. 16, 1884 | A.J. Maughlin, W.C. Marr | Bit-stock (unusual, geared) | ||
 | 363,901 | May 31, 1887 | W.C. Marr | Wrench | |
 | 382,712 | May 15, 1888 | W.C. Marr | Pliers | |