Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642630 | Process for solids waste landfill gas treatment and separation of methane and carbon dioxide | Michael J. Rutsch | 1997-07-01 |
| 5607011 | Reverse heat exchanging system for boiler flue gas condensing and combustion air preheating | — | 1997-03-04 |