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| Patents for John K. Mayo | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 3,494 | Mar. 20, 1844 | J.K. Mayo | Manner of applying circular saws for sawing lumber, &c. | |
 | 50,833 | Nov. 07, 1865 | J.K. Mayo | Improvement in machines for cutting scale-board and match-splints | |
 | 51,735 | Dec. 26, 1865 | J.K. Mayo | Proved material for roofing, tubing, tanks, wainscoting, boats, and other structures | |