Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11909734 | Methods and systems for authenticating identity | Sung Nam Choi, David John Zage, Susan L. Washburn | 2024-02-20 |
| 10541996 | Methods and systems for authenticating identity | Sung Nam Choi, David John Zage, Susan L. Washburn | 2020-01-21 |
| 4519262 | Positive engagement safety mechanism and lift belt construction for long stroke, well pumping unit | Weems D. Turner | 1985-05-28 |