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| Patents for John W. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 48,409 | Jun. 27, 1865 | H.K. Jones | Improvement in lathes for turning tool-handles | wood lathes | |
| 342,185 | May 18, 1886 | J.W. Clark, J.E. Collins | Hay Knife | hay or straw knives | |
| 486,300 | Nov. 15, 1892 | G.W. Scheid | Wrench | wrench combination tools | |