Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9871462 | Regenerative variable frequency drive with auxiliary power supply | Theodore Clifton Pettyjohn, Jack Yang | 2018-01-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9871462 | Regenerative variable frequency drive with auxiliary power supply | Theodore Clifton Pettyjohn, Jack Yang | 2018-01-16 |