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| All Patents in class 426/507 | |||||
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| Number | Date | Patentee | Title | Type | |
| 250,578 | Dec. 06, 1881 | G.W. Richmond | Coffee Roaster | coffee roasters | |
| 344,597 | Jun. 29, 1886 | A.L. Saint-Aubin | Process of and Apparatus for Treating Coffee | roasting coffee | |