Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5821676 | Spark plug with grooved, tapered center electrode | Ray W. Atchinson, John Franklin Mc Keon, Jr., Donald Robert Van Uum, Charles D. Oakley, Gamdur S. Mann +1 more | 1998-10-13 |