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| All Patents in class 366/283 | |||||
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| Number | Date | Patentee | Title | Type | |
| 345,370 | Jul. 13, 1886 | O.E. Davidson | Coffee Roaster | coffee roasters | |
| 1,915,220 | Jun. 20, 1933 | G.O. Leopold, T.J. Fegley | Ice cream freezer | ||