Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5828978 | Line restoration detection for security systems | Andrew L. Westra | 1998-10-27 |
| 5426688 | Telecommunication alarm method and system | — | 1995-06-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5828978 | Line restoration detection for security systems | Andrew L. Westra | 1998-10-27 |
| 5426688 | Telecommunication alarm method and system | — | 1995-06-20 |