Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4601337 | Foam drive oil displacement with outflow pressure cycling | Hon Chung Lau | 1986-07-22 |
SO
Stephen M. O'Brien
Overall (All Time): #3,998,944 of 4,157,543Top 100%
1
Patents All Time