Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883574 | Arrangement for preventing disturbances in electronic alarm systems | — | 1999-03-16 |
| 5777555 | Using unitary transmitting/receiving antenna | — | 1998-07-07 |
| 5751213 | Theft detection alarm element for avoiding false alarms | — | 1998-05-12 |
| 4845509 | Multiple loop receiving device in a security system | — | 1989-07-04 |
| 4812811 | Alarm tag | Ulf Graflind | 1989-03-14 |
| 4704602 | Method and system for detecting an indicating device | — | 1987-11-03 |