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| Patents for William M. Hoffman | |||||
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| Picture | Number | Date | Patentee | Title | |
| 335,197 | Feb. 02, 1886 | W.M. Hoffman | Fleshing and Unhairing Machine | ||
| 335,198 | Feb. 02, 1886 | W.M. Hoffman | Putting Out and Striking Out Machine for Hides or Skins | ||