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| Patents for Thomas Keenan | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 172,424 | Jan. 18, 1876 | L.D. Green | Improvement in rotary pumps | |
 | 183,574 | Oct. 24, 1876 | T. Keenan | Improvement in Pipe-Wrenches | |