Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4424662 | Drive apparatus for roll baling machine | John H. Freimuth, Richard E. Jennings, Willis R. Campbell | 1984-01-10 |
| 4422374 | Baling machine with air spring means for maintaining apron tension | Willis R. Campbell | 1983-12-27 |
| 4280320 | Tensioning apparatus | — | 1981-07-28 |