Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887069 | Perimeter intrusion detection system with block ranging capabilities | Melvin C. Maki, Walter J. Feller | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887069 | Perimeter intrusion detection system with block ranging capabilities | Melvin C. Maki, Walter J. Feller | 1989-12-12 |