Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754775 | Device and method for preventing water from flowing past a closed valve in a pipeline | — | 1988-07-05 |
JO
John E. Ollerenshaw
Overall (All Time): #3,954,754 of 4,157,543Top 100%
1
Patents All Time