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