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| Patents for Al Stark | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 448,124 | Mar. 10, 1891 | C.C. Conroy | Improvements in Pipe-Wrenches and Pipe-Tongs | |
 | 450,141 | Apr. 14, 1891 | J.A. Cook | Telescopic Rule | |