Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7604437 | Method and apparatus for creating support columns using a hollow mandrel with upward flow restrictors | Kord J. Wissmann | 2009-10-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7604437 | Method and apparatus for creating support columns using a hollow mandrel with upward flow restrictors | Kord J. Wissmann | 2009-10-20 |