Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846666 | Method and burner for burning fuel | Hans Bilawa | 1989-07-11 |
| 4797091 | Method and apparatus for utilizing the heat energy of domestic and commercial refuse | — | 1989-01-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846666 | Method and burner for burning fuel | Hans Bilawa | 1989-07-11 |
| 4797091 | Method and apparatus for utilizing the heat energy of domestic and commercial refuse | — | 1989-01-10 |