Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651349 | Purge system flow monitor and method | Gregory J. Dykstra, Kim M. Person, John E. Letcher, James M. Witalec | 1997-07-29 |
| 5651350 | Method of leak detection for an evaporative emission control system | William B. Blomquist, Gary Dawson, Roland T. Richardson, Glen E. Tallarek, John E. Letcher | 1997-07-29 |
| 5606121 | Method of testing an evaporative emission control system | William B. Blomquist, Gary Dawson, Roland T. Richardson, Glen E. Tallarek, John E. Letcher | 1997-02-25 |