Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858537 | Combustion method and apparatus | William F. Priebe, Dennis A. Braaten | 1989-08-22 |
| 4829913 | Combustion method and apparatus | William F. Priebe, Dennis A. Braaten | 1989-05-16 |