Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458300 | Disposable flashlight | — | 1984-07-03 |
| 4420975 | System and method for determining the relative permeability of an earth formation surrounding a wellbore | Walter A. Nagel | 1983-12-20 |