Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847577 | Security and alarm system employing a particular pulse width discriminator | Roland T. Gerhart | 1989-07-11 |
| 4724425 | Security and alarm system | Roland T. Gerhart | 1988-02-09 |