Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4441021 | Luminosity probe for diesel engine timing apparatus | Gene E. Olson, Donald D. Grover, Christopher B. Stout, Thomas P. Becker | 1984-04-03 |
| 4373384 | Diesel engine timing apparatus | Gene E. Olson, Donald D. Grover, Christopher B. Stout, Thomas P. Becker, Glenn A. Kaufman | 1983-02-15 |
| 4262527 | Self-adjusting engine timing pickup probe | Donald D. Grover | 1981-04-21 |