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| Patents for John C. da Costa | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,612 | Dec. 23, 1851 | W.F. Fergus, J.M. Patton | Cutter for planing-machines | cutters | |
| 9,720 | May 10, 1853 | W.F. Fergus, J.M. Patton | Tonguing and grooving and molding cutter | cutters | |