Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7794527 | Variable position gas trap | — | 2010-09-14 |
| 7395691 | Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration | Donald Lewis Hall, Wells Shentwu | 2008-07-08 |
| 7210342 | Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration | Donald Lewis Hall, Wells Shentwu | 2007-05-01 |