Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258743 | Piezoelectric motion sensor | William W. Williamson | 1993-11-02 |
| 4737770 | Security system with programmable sensor and user data input transmitters | Robert E. Brunius, William W. Williamson | 1988-04-12 |
| 4614945 | Automatic/remote RF instrument reading method and apparatus | Robert E. Brunius | 1986-09-30 |