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| Patents for Dan P. Foster | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 22,947 | Feb. 15, 1859 | D.P. Foster | Foster's Unyielding Grip Wrench | |
 | 85,298 | Dec. 29, 1868 | D.P. Foster | Improved Suspending-Clamp | |
 | RE5,914 | Jun. 16, 1874 | D.P. Foster | Improvement in wrenches | |
 | 222,484 | Dec. 09, 1879 | D.P. Foster | Improvement in Pipe-Wrenches | |
 | 282,298 | Jul. 31, 1883 | D.P. Foster | Pipe or Nut Wrench | |
 | 286,600 | Oct. 16, 1883 | D.P. Foster | Pipe Tongs | |
 | 339,634 | Apr. 13, 1886 | D.P. Foster | Immprovements in Nut and Pipe Wrenches | |