Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4414888 | Baling machine with air spring means for maintaining apron tension | Willis R. Campbell | 1983-11-15 |
| 4343141 | Baling machine with improved arm assembly for controlling expansion of the upper apron | Willis R. Campbell | 1982-08-10 |