Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091247 | Woven geotextile grid | Gary L. Willibey, John Hawkins, David M. Wilkinson | 1992-02-25 |
| 4960349 | Woven geotextile grid | Gary L. Willibey, John Hawkins, David M. Wilkinson | 1990-10-02 |