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| Patents for Charles R. Hazel | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 444,709 | Jan. 13, 1891 | T.L. Varns, J.B. Michener | Grain-meter | |
| 1,281,001 | Oct. 08, 1918 | C.R. Hazel | Grinding and Polishing Machine | ||