Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258684 | Spark plug for an internal combustion engine | — | 1993-11-02 |
| 4803395 | Process for the manufacture of a platinum-tipped bimetallic central electrode for an ignition plug and the electrode produced according to this process | — | 1989-02-07 |
| 4540912 | Sparking-plug | — | 1985-09-10 |