Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800964 | Compact shank assembly with leaf spring | Vernon E. Rettig, Jeffrey J. Postal | 1989-01-31 |
| 4715515 | Hopper and metering mechanism structure for an agricultural implement | — | 1987-12-29 |
| 4700785 | Furrow opener assembly with integral down-pressure adjustment | Robert J. Bartusek, Vernon E. Rettig | 1987-10-20 |
| 4609203 | Hitch structure with variable link | John R. Myers, Vernon E. Rettig | 1986-09-02 |
| 4590869 | Double disk opener assembly and disk blade therefor | — | 1986-05-27 |
| 4518046 | Multiple implement hitch and transport | Vernon E. Rettig, Marvin L. Bigbee, Glenn D. Head, Jr. | 1985-05-21 |
| 4410194 | Caster wheel brake | — | 1983-10-18 |
| 4408704 | Feed cup assembly with flexible metering gate | — | 1983-10-11 |
| 4337835 | Scraper for double disk furrow opener | — | 1982-07-06 |
| 4311104 | Press grain drill | Lester D. Schreiner | 1982-01-19 |
| 4207823 | Planter | Steve A. Junge | 1980-06-17 |
| 4196779 | Disk blade assembly | — | 1980-04-08 |