Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6135670 | Polished rod clamp | Allen B. Larson | 2000-10-24 |
| 4622806 | Ditch swather | Frank Dietz | 1986-11-18 |
| 4460193 | Pull type swather assembly and mounting therefor | Frank Dietz | 1984-07-17 |