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| Patents for Sumner Siberell | |||||
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| Number | Date | Patentee | Title | Type | |
| 396,018 | Jan. 08, 1889 | C.M. Woolworth | Drilling-machine | portable metal boring and drilling machines | |
| 825,150 | Jul. 03, 1906 | R.L. McCartney | Attachment for Carpenters' Squares | squares | |