Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6308645 | Seeding machine with bulk seed supply container and independent, opener-mounted metering devices | Kevin Newkirk, Gregory W. Arnett | 2001-10-30 |
| 5653292 | Method and apparatus for automatically controlling the soil penetration depth of zone tillage coulters and the like | Timothy J. Ptacek, Dan J. Obenland, Thomas O. McGuire | 1997-08-05 |
| 5573070 | Low-profile folding marker for seed planters and the like | Roger L. Meek | 1996-11-12 |
| 5497715 | Seed metering drive mechanism for seed planters and the like | Roger L. Meek | 1996-03-12 |
| 5398625 | Grain drill unit having seed firming wheel | Eric Johnson, James I. Van Blaricon | 1995-03-21 |
| 5232054 | Front folding no-till drill | James I. Van Blaricon, Eric Johnson, Dan J. Obenland | 1993-08-03 |
| 5022333 | Universal press wheel arm assembly | Eric Johnson | 1991-06-11 |