Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10570937 | Clamp sensor systems and methods | Kelly R. Hefelfinger, Robert Pendergrass | 2020-02-25 |
| 9500684 | Line-mounted electrical energy measurement device with integrated voltage pickup and clamp | Robert Pendergrass, Scott Bretvick, Zhijiang GUO | 2016-11-22 |