Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363304 | Engine ignition system with anti-knock timing shift | Adolf Fritz, Alfred Krappel, Johannes Guggenmos | 1982-12-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363304 | Engine ignition system with anti-knock timing shift | Adolf Fritz, Alfred Krappel, Johannes Guggenmos | 1982-12-14 |