Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509389 | Four speed ratio transaxle with overdrive | Adam Vahratian, Roosevelt Maynard, Jr., Po-Lung Liang | 1985-04-09 |
| 4458559 | Infinitely variable belt-drive transmission | Po-Lung Liang, Alan R. Fisher | 1984-07-10 |
| 4452099 | Three speed overdrive transaxle assembly | — | 1984-06-05 |
| 4393731 | Infinitely variable belt-drive transmission | Po-Lung Liang, Alan R. Fisher | 1983-07-19 |
| 4368649 | Automatic transaxle driveline having four forward driving ratios and a single reverse ratio | Adam Vahratian, Roosevelt Maynard, Jr., Po-Lung Liang | 1983-01-18 |
| 4226123 | Non-synchronous four speed automatic transmission with overdrive | — | 1980-10-07 |
| 4224837 | Four speed overdrive power transmission with bidirectional reaction brake band servo | — | 1980-09-30 |