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| All Patents in class 56/15.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,598,234 | Aug. 31, 1926 | C.C. Baldwin | Automatically Operating Power Actuacted Grain Cutting and Thrashing Harvester | threshers and thrashers | |
| 1,658,430 | Feb. 07, 1928 | F.V. Donald | Tractor hitch for lawn mowers | ||
| 2,502,730 | Apr. 04, 1950 | A.A. Koch | Mower | mowing machines | |