Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876998 | Crankcase for internal combustion engines | — | 1989-10-31 |
| 4813387 | Internal combustion, reciprocating piston engine | Kurt Prevedel, Hans Oberth | 1989-03-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876998 | Crankcase for internal combustion engines | — | 1989-10-31 |
| 4813387 | Internal combustion, reciprocating piston engine | Kurt Prevedel, Hans Oberth | 1989-03-21 |