Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492820 | Telephone alarm system | Duane O. Hall, Richard M. Bangerter | 1985-01-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492820 | Telephone alarm system | Duane O. Hall, Richard M. Bangerter | 1985-01-08 |