Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9562419 | Downhole tools and methods for selectively accessing a tubular annulus of a wellbore | William W. Fleckenstein | 2017-02-07 |
| 8991505 | Downhole tools and methods for selectively accessing a tubular annulus of a wellbore | William W. Fleckenstein | 2015-03-31 |