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| All Patents in class 34/147 | |||||
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| Number | Date | Patentee | Title | Type | |
| 517,189 | Mar. 27, 1894 | C.A. Otto | Apparatus for Roasting Coffee, Cocoa, &c. | coffee roasters | |
| 892,502 | Jul. 07, 1908 | J.S. Coon | Grain Cleaner and Dryer | corn dryers | |
| 1,151,111 | Aug. 24, 1915 | D.A. McIntosh | Can-heating retort | canning apparatus | |