Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849870 | Method of operating a-c drive with parallel connected d-c link power converters | — | 1989-07-18 |
| 4814964 | Variable speed a-c drive | Colin D. Schauder, John Rosa | 1989-03-21 |
| 4805082 | Regenerative two-quadrant converter | Colin D. Schauder | 1989-02-14 |