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| Patents for Benjamin L. Walker | |||||
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| Picture | Number | Date | Patentee | Title | |
| 120,351 | Oct. 24, 1871 | B.L. Walker | Holders for Screw Cutting Dies | ||
 | 158,548 | Jan. 05, 1875 | B.L. Walker | Wrenches | |
 | 194,488 | Aug. 21, 1877 | B.L. Walker | Pipe And Nut Wrenches With Cutters | |