Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7661377 | Seed meter with flexible seed disc | Michael E. Friestad, Nathan A. Mariman, David J. Rylander | 2010-02-16 |
| 7451713 | Seed disk for a seed meter | Nathan A. Mariman, Paul R. Riewerts, Michael E. Friestad | 2008-11-18 |
| 7343868 | Seed placement system for use in a seeding machine | Lyle Eugene Stephens, Robert J. Roman, Jose M. Valdez | 2008-03-18 |
| 6848377 | Furrow opener/closer in an agricultural machine | David J. Rylander, William H. Thompson | 2005-02-01 |
| 6752095 | Seed metering system for use in a seeding machine | David J. Rylander, Daniel B. Thiemke, Todd E. Vandersnick, Jose M. Valdez, Garn Penfold | 2004-06-22 |
| 6644225 | Electronically controlled tuning orifice for seed meter tuning | — | 2003-11-11 |
| 6481647 | Seed meter and accelerator | David J. Rylander | 2002-11-19 |