Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332225 | Internal combustion engine with oxygen sensor heater control | William J. Ricketts | 1982-06-01 |
| 4284972 | Vehicle mileage interval detector | Randolph Kwok-Kin Chiu, Douglas A. Stiff | 1981-08-18 |