Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795937 | Spark plug with combined surface and air spark paths | Eberhard P. Wagner, Rudolf Maly, Otto Loffler | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795937 | Spark plug with combined surface and air spark paths | Eberhard P. Wagner, Rudolf Maly, Otto Loffler | 1989-01-03 |