Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9236713 | Spark plug having improved ground electrode orientation and method of forming | Don R. Gregg, Kevin J. Kowalski | 2016-01-12 |
| 8866369 | Spark plug having improved ground electrode orientation and method of forming | Donald R. Gregg, Kevin J. Kowalski | 2014-10-21 |