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All Patents in class 460/87 | |||||
Number | Date | Patentee | Title | Type | |
2,467 | Feb. 21, 1842 | A. Ralston | Grain Separator | corn and grain separators | |
5,509 | Apr. 11, 1848 | A. Smith | Grain Separator | corn and grain separators | |
RE342 | Jan. 15, 1856 | A. Ralston | Grain Separator | corn and grain separators |