Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5746387 | Hybrid composite expandable shaft | John Pretto | 1998-05-05 |
| 5379964 | Composite expandable shaft | Louis J. Keester, Richard S. Hansen | 1995-01-10 |
| 5170960 | Expanding winding head for winding rolls | — | 1992-12-15 |