Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11453112 | Pipe wrench | Cheng Zhang Li, Scott M. Hangartner, Andrew G. Wagner | 2022-09-27 |
| 10994405 | Pipe wrench | Cheng Zhang Li, Scott M. Hangartner, Andrew G. Wagner | 2021-05-04 |
| 5949060 | High security capacitive card system | George K. Schattschneider | 1999-09-07 |