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| All Patents in class 426/595 | |||||
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| Number | Date | Patentee | Title | Type | |
| 191,378 | May 29, 1877 | F. Silver | Improvement in Processes of Preparing Coffee | roasting coffee | |
| 250,578 | Dec. 06, 1881 | G.W. Richmond | Coffee Roaster | coffee roasters | |