Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6607659 | Drilling mud reclamation system with mass flow sensors | Lee Hilpert | 2003-08-19 |
| 6590769 | Purge and cooling system for enclosure for hazardous environment | Lee Hilpert | 2003-07-08 |