Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539503 | Rapid-heating, high-temperature-stable spark plug for internal combustion engines | Friedrich Esper, Karl-Hermann Friese, Walter Gohl | 1985-09-03 |
PS
Peter Sternad
Overall (All Time): #4,021,026 of 4,157,543Top 100%
1
Patents All Time