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| Patents for Thomas B. Doolittle | |||||
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| Number | Date | Patentee | Title | Type | |
| RE4,003 | May 31, 1870 | G.C. Taft | Improvement in Twine Cutter | ||
| 131,085 | Sep. 03, 1872 | T.B. Doolittle | Improvement in Button Hole Cutters | ||