Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871971 | High impedance fault analyzer in electric power distribution networks | Donald I. Jeerings | 1989-10-03 |
| 4851782 | High impedance fault analyzer in electric power distribution | Donald I. Jeerings | 1989-07-25 |