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| Patents for Percy D. Parks | |||||
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| Picture | Number | Date | Patentee | Title | |
| 405,148 | Jun. 11, 1889 | M. Dallas | Machine for making barrel-staves | ||
 | 416,088 | Nov. 26, 1889 | W. Baptist | Sawing-machine | |
 | 453,890 | Jun. 09, 1891 | R. Oerlein | Combined folding rule and try square | |
| 475,098 | May 17, 1892 | L.S. Washburn | Drag-saw | ||