Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061524 | Device and method for transporting catalyst to a reactor vessel | Clifford L. Johns | 2011-11-22 |
| 8063778 | Device and method for indicating the condition of tubes on a tubesheet | Clifford L. Johns, Bart Andrew Nuss | 2011-11-22 |