Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845509 | Multiple loop receiving device in a security system | — | 1989-07-04 |
| 4812811 | Alarm tag | Ulf Graflind | 1989-03-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845509 | Multiple loop receiving device in a security system | — | 1989-07-04 |
| 4812811 | Alarm tag | Ulf Graflind | 1989-03-14 |