Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12270478 | Valve system and method for reducing water hammer effect | Melvin Plummer | 2025-04-08 |
| 11767923 | Break-away check valve | Melvin Plummer, William A. Seyferth | 2023-09-26 |