Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676715 | Key advanced linear kinetic absorber system particulate arresting device | Daniel S. Kalka, Dennis W. Johnson, Robert B. Myers | 1997-10-14 |
| 5672323 | Activated carbon flue gas desulfurization systems for mercury removal | Dennis W. Johnson | 1997-09-30 |