Issued Patents 2025
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12320089 | Reinforced manhole cover gasket | William Eugene Putnam, David Alan Putnam, Mark A. Weih, Guido Quesada | 2025-06-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12320089 | Reinforced manhole cover gasket | William Eugene Putnam, David Alan Putnam, Mark A. Weih, Guido Quesada | 2025-06-03 |