Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11510076 | Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption | Robert R. Riggsby, Shi Man Li | 2022-11-22 |
| 10798593 | Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption | Robert R. Riggsby, Shi Man Li | 2020-10-06 |
| 10117118 | Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption | Robert R. Riggsby, Shi Man Li | 2018-10-30 |
| 9686698 | Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption | Robert R. Riggsby, Shi Man Li | 2017-06-20 |
| 8971792 | Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption | Robert R. Riggsby, Shi Man Li | 2015-03-03 |