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| Patents for H. S. Downe | |||||
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| Number | Date | Patentee | Title | Type | |
| 306,967 | Oct. 21, 1884 | G.F. Simonds | Insertible Saw-Tooth | saw teeth | |
| 326,683 | Sep. 22, 1885 | G.F. Simonds | Improved Wrench For Setting and Withdrawing Removable Saw Teeth | wrenches | |