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| Patents for Charles Douglas Edwards | |||||
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| Number | Date | Patentee | Title | Type | |
| 306,728 | Oct. 21, 1884 | C.D. Edwards | Clod-cutter | agricultural | |
| 335,902 | Feb. 09, 1886 | C.D. Edwards | Cockle-separating machine | grain sifters | |
| 810,478 | Jan. 23, 1906 | C.D. Edwards | Landside-wheel | construction machines | |