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| Patents for Charles Selkirk | |||||
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| Number | Date | Patentee | Title | Type | |
| 259,692 | Jun. 20, 1882 | E.K. Jenkins | Cutter-head for molding-machines | cutterheads | |
| 407,285 | Jul. 16, 1889 | C. Ensminger | Combined Square, Level, Protractor, &c. | combination tools | |