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| Patents for Columbus W. Corr | |||||
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| Number | Date | Patentee | Title | Type | |
| 136,138 | Feb. 25, 1873 | C.W. Corr | Improvement in Hollow Augers | hollow bits | |
| 206,665 | Aug. 06, 1878 | C.W. Corr | Power Hammer | drop hammers | |