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| Patents for W. A. Hitchcock | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 308,145 | Nov. 18, 1884 | W.B. Edwards | Try-Square | |
 | 438,848 | Oct. 21, 1890 | N.B. Keyes | Sheet-Metal Pliers | |
| 443,795 | Dec. 30, 1890 | W.R. Root | Sandpapering-machine | ||