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| All Patents in class 159/7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 644,747 | Mar. 06, 1900 | C.F. Shumaker | Roasting Machine | coffee roasters | |
| 1,273,208 | Jul. 23, 1918 | C.L. Weil | Salt manufacture | manufacturing salt | |