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| Patents for E. C. Carlsen | |||||
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| Number | Date | Patentee | Title | Type | |
| 545,304 | Aug. 27, 1895 | J.E. Nelson | Pipe Tongs | pipe tongs | |
| 604,375 | May 24, 1898 | J.K. Downie | Improvements in Monkey-Wrenches | bicycle or pocket wrenches | |