Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671144 | Method and apparatus for detecting ground faults and for isolating power supply from the ground faults | Joseph Langford | 2003-12-30 |
| 6650516 | Method and apparatus for detecting electrical faults and isolating power source from the electrical faults | Joseph Langford | 2003-11-18 |
| 5353038 | Automatic direction finder sense antenna | Leon Hardman | 1994-10-04 |