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| All Patents in class 198/592 | |||||
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| Number | Date | Patentee | Title | Type | |
| 461,622 | Oct. 20, 1891 | E.W. Ross | Carrier attachment for feed-cutters | ||
| 499,460 | Jun. 13, 1893 | F.X. Hooper | Drying apparatus | ||
| 1,285,080 | Nov. 19, 1918 | R. Elder | Material Handling Apparatus | conveyors and hoppers | |
| 2,921,663 | Jan. 19, 1960 | C.E. Parker | Sheet handling apparatus | woodworking machine material handling | |