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| All Patents in class 426/309 | |||||
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| Number | Date | Patentee | Title | Type | |
| 73,486 | Jan. 21, 1868 | J. Arbuckle, Jr. | Improvement in Roasted Coffee | roasting coffee | |
| 173,546 | Feb. 15, 1876 | H.A. Kroberger | Improvements in Processes of Glossing Coffee | roasting coffee | |
| 250,578 | Dec. 06, 1881 | G.W. Richmond | Coffee Roaster | coffee roasters | |