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| All Patents in class 210/477 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,235,395 | Jul. 31, 1917 | A. Storm | Filter | |
| 1,767,001 | Jun. 24, 1930 | H.L. Johnston | Waste-food-handling apparatus | ||
| 1,796,842 | Mar. 17, 1931 | E.A. Hall | Cylinder Hone | ||
| 1,933,022 | Oct. 31, 1933 | D.A. Meeker | Food handling apparatus | ||