Issued Patents 2025
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345011 | Vented precipitation guarding manhole cover assembly | — | 2025-07-01 |
| 12320089 | Reinforced manhole cover gasket | William Eugene Putnam, Randall Avery Putnam, Mark A. Weih, Guido Quesada | 2025-06-03 |
| 12270175 | Vented precipitation guarding manhole cover assembly | — | 2025-04-08 |