Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288896 | Method for manufacturing an improved plug valve | Walter H. West | 1981-09-15 |
| 4219046 | Plug valve and method | Walter H. West | 1980-08-26 |
EP
E. D. Prueter
Overall (All Time): #2,371,688 of 4,157,543Top 60%
2
Patents All Time