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| Patents for Clifford E. Martin | |||||
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| Number | Date | Patentee | Title | Type | |
| 534,180 | Feb. 12, 1895 | C.E. Martin, A.J. Smart | Drilling-machine | drill presses | |
| 916,344 | Mar. 23, 1909 | C.E. Martin | Core-Box Plane | core box planes | |