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| Patents for Shadrick F. Perkins | |||||
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| Picture | Number | Date | Patentee | Title | |
| 461,719 | Oct. 20, 1891 | P. Stovall | Saw-mill feed | ||
 | 488,618 | Dec. 27, 1892 | P. Stovall | Variable friction-feed in sawmills | |