Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734071 | Marine engine exhaust assembly | Alvin R. Zemlicka, Francis E. Bertram | 1988-03-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734071 | Marine engine exhaust assembly | Alvin R. Zemlicka, Francis E. Bertram | 1988-03-29 |