Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9673593 | Spark plug having firing pad | Kevin J. Kowalski, Nathan A. Thomson, Curtis W. Verhoff, Richard L. Keller | 2017-06-06 |
| 9573218 | Welding system for attaching firing tips to spark plug electrodes | — | 2017-02-21 |