Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080029 | Method of manufacturing a spark plug with ground electrode concentrically disposed to a central electrode | James E. Johnson | 2000-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080029 | Method of manufacturing a spark plug with ground electrode concentrically disposed to a central electrode | James E. Johnson | 2000-06-27 |