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| Number | Title | Issue Date |
| 7103986 | Adjustable agricultural marker system and method of manufacture An agricultural marker assembly is disclosed for use with a marker arm that extends from an agricultural vehicle wherein the vehicle moves along a primary travel direction during operation. The assembly includes an extension assembly including at least first and sec... | 09/12/2006 |
| 7021396 | Suspension system for a three-point apparatus A three-point apparatus is disclosed comprising a hitch system, an implement, and a suspension system. The hitch system is comprised of a base and a three-point interface. The base of hitch system is coupled to the three-point interface of the hitch system. The thre... | 04/04/2006 |
| 5887663 | Marker-actuated implement control circuit for an agricultural machine Disclosed is a method for controlling the above-ground "raise height" of a seed-planting row unit on an agricultural planter having a row marker, a marker switch and a positioning assembly such as a solenoid valve and hydraulic cylinder for raising and lo... | 03/30/1999 |
| 5379847 | Tri-fold row marker A tri-fold row marker comprises three arm segments, a winglet pivotally coupled to the toolbar, an inner arm pivotally coupled to the winglet, and an outer arm pivotally coupled to the inner arm. A marker disc is mounted to the distal end of the outer arm... | 01/10/1995 |
| 4488476 | Marker control valve A sequencing valve utilized with a tractor-propelled planter having two row arms which pivot downward to the ground in an alternating sequence as the planter changes directions in the field. The sequencing valve is connected with the conventional hydrauli... | 12/18/1984 |
