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| All Patents in class 366/309 | |||||
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| Number | Date | Patentee | Title | Type | |
| 109,228 | Nov. 15, 1870 | N. Linden | Coffee Roaster | coffee roasters | |
| 1,766,999 | Jun. 24, 1930 | H.L. Johnston | Food-handling machine | ||
| 1,872,004 | Aug. 16, 1932 | T.F. Rataiczak, J.C. Slager | Food handling apparatus | ||