Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5144312 | Locating system | — | 1992-09-01 |
| 4352098 | Surveillance systems | James H. Stephen, Michael A. Flemming | 1982-09-28 |
| 4303910 | Detection system | — | 1981-12-01 |
| 4302846 | Marker tag for a detection system | James H. Stephen | 1981-11-24 |