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| Patents for Thomas W. Capen | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 616,659 | Dec. 27, 1898 | T.W. Capen, P.W. Gates | Rock or Ore Breaker | |
 | 691,339 | Jan. 14, 1902 | T.W. Capen, A.J. Gates | Rock or ore breaker | |