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| Patents for J. N. Coombs | |||||
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| Number | Date | Patentee | Title | Type | |
| 87,972 | Mar. 16, 1869 | H. Richter | Gas Plier | pipe tongs | |
| 89,466 | Apr. 27, 1869 | W.D. Chase | Pipe Cutting Machine | pipe cutting machines | |
| 95,793 | Oct. 12, 1869 | E. Granier | Improvement in Combined Tool | combination tools | |