Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6166481 | Anti-carbon fouling spark plug | Randy O. Knapp, Robert Scott Ingham | 2000-12-26 |
| 6132277 | Application of precious metal to spark plug electrode | Michael E. Garrett, Robert Scott Ingham, Timothy George Timko | 2000-10-17 |
| 4568855 | Spark plug | Joseph Nemeth, Clifford C. McMahon | 1986-02-04 |