Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633791 | Opener assembly including a compact, arc-shaped opener | Virgil Dean Haverdink | 1987-01-06 |
| 4201348 | Feed grinding and mixing apparatus | Marvin L. Bigbee, Edward C. Ryan | 1980-05-06 |