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| Patents for John M. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 692,828 | Feb. 11, 1902 | J.C. Crume, J.M. Clark | Wrench | jar wrenches | |
| 760,613 | May 24, 1904 | J.C. Crume, J.M. Clark | Combination-tool | combination cork extractors | |