Patents per Year
Issued Patents All Time
Showing 1–10 of 10 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 |
| D1024273 | Valve flapper | Steve E. Moore | 2024-04-23 |
| 11536374 | Cleanout conduit valve assemblies and installations | Steve E. Moore | 2022-12-27 |
| 11274783 | Sure-seal cleanout conduit valve assemblies and methods | Steve E. Moore | 2022-03-15 |
| 11118323 | Traffic-compatible vented precipitation guarding manhole cover assemblies | — | 2021-09-14 |
| 9605403 | Vented precipitation guarding manhole cover assemblies | — | 2017-03-28 |
| 8851791 | Manhole cover venting and precipitation guarding devices | — | 2014-10-07 |
| 4537044 | Food storage container | — | 1985-08-27 |