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| All Patents in class 34/606 | |||||
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| Number | Date | Patentee | Title | Type | |
| 616,790 | Dec. 27, 1898 | M.F. Hamsley | Apparatus for Roasting Coffee Berries | coffee roasters | |
| 618,644 | Jan. 31, 1899 | O. Collins | Cotton-Seed Roaster | coffee roasters | |
| 620,355 | Feb. 28, 1899 | E.M. Potter | Coffee Roasting Machine | coffee roasters | |
| 642,916 | Feb. 06, 1900 | J.A. McCaskell | Coffee Roasting Machine | coffee roasters | |