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| Patents for John Clarke | |||||
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| Number | Date | Patentee | Title | Type | |
| 67X | Dec. 31, 1793 | J. Clarke | Hydraulic Machine for Currents | water wheels | |
| 7,064X | May 17, 1832 | J. Clarke, J.W. Plummer | Fire arm | gunsmith | |
| 7,065X | May 17, 1832 | J. Clarke, J.W. Plummer | Manufacturing rifles | rifles | |
| 697,236 | Apr. 08, 1902 | J. Clarke | Mortising, tenoning and grooving machine | mortising machines | |