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| Patents for William W. Dunn | |||||
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| Number | Date | Patentee | Title | Type | |
| 266,790 | Oct. 31, 1882 | W.W. Dunn | Coffee Roaster | coffee roasters | |
| 284,728 | Sep. 11, 1883 | W.W. Dunn | Apparatus for Grain Drying and Coffee Roasting | coffee roasters | |