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| Number | Title | Issue Date |
| 7017675 | One-pass primary tillage machine A one-pass primary tillage machine provides a combination of shallow and deep tillage, residue cutting and mixing, and clod size reduction and leveling of the field to prepare the field for the next planting season. A front group of flat coulters slice through the r... | 03/28/2006 |
| 6913085 | Single standard double disk configuration A double disk C-spring standard assembly utilizes bearings mounted to a simple carrier plate. The plate is connected to the lower end of a single C-spring oriented in the fore-and-aft direction. Bearing assembly mounting holes in the plate define the necessary gang ... | 07/05/2005 |
| 6276462 | Combination tillage equipment for providing a smooth finish A tillage apparatus performs shallow tillage with leading tillage discs followed by chisel plows with winged points performing primary tillage in strips of untilled soil left by the forward discs. The points lift the soil and roll it laterally. Levelers f... | 08/21/2001 |
| 5080178 | Agricultural tillage implement with improved soil leveler using staggered discs A primary tillage implement having a plurality of chisel plows mounted in lateral spacing on a forward bar, also has a plurality of disc levelers mounted on a rear bar. Each disc leveler assembly is laterally spaced from and centered between the paths of ... | 01/14/1992 |
