Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6130536 | Preform test fixture and method of measuring a wall thickness | Robert D. Johnson | 2000-10-10 |
| 6071048 | Preform gate cutter | James E. Gooch, Ronnie Naramore, Robert D. Johnson, Paul A. Donald, Billy Donald +1 more | 2000-06-06 |