Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509786 | Support for collapsible drag reducer | — | 1985-04-09 |
| 4462628 | Guide for collapsible drag reducer | — | 1984-07-31 |
| 4458937 | Drag reducer for tractor trailer | Ronald L. Beckmann, Del C. Schroeder | 1984-07-10 |