Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197541 | Apparatus for two phase vacuum extraction of soil contaminants | Ronald E. Hess, Albert A. Hooper, Steven R. Morrow, Erich Zimmerman | 1993-03-30 |
| 5050676 | Process for two phase vacuum extraction of soil contaminants | Ronald E. Hess, Albert A. Hooper, Steven R. Morrow, Erich Zimmerman | 1991-09-24 |