Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540902 | Retrievable cementing bushing system | James Hall | 2017-01-10 |
DI
Derek Ingraham
Overall (2017): #441,966 of 506,227Top 90%
1
Patents 2017