Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809649 | Four-stroke internal-combustion engine and procedure for operating such an engine | — | 1989-03-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809649 | Four-stroke internal-combustion engine and procedure for operating such an engine | — | 1989-03-07 |