Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258743 | Piezoelectric motion sensor | Jon R. Nelson | 1993-11-02 |
| D299422 | Combined annunciator and telephone jack wall plate and a junction box therefor | Robert E. Brunius | 1989-01-17 |
| 4737770 | Security system with programmable sensor and user data input transmitters | Robert E. Brunius, Jon R. Nelson | 1988-04-12 |