Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5358356 | Erosion control mat | Gerald A. Romanek, Mark L. Marienfield, Sukhdev S. Guram | 1994-10-25 | $41,451,000 |
| 5249893 | Erosion control mat | Gerald A. Romanek, Mark L. Marienfield, Sukhdev S. Guram | 1993-10-05 | $11,395,000 |