Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5967122 | Computer-controlled internal combustion engine equipped with spark plugs | Henry P. Muntzer, Everett P. Lamprecht | 1999-10-19 |
| 5767613 | Spark plug with enlarged center electrode and gap | — | 1998-06-16 |