Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5349355 | Credential tracking system | Robert A. Leverance | 1994-09-20 |
| 4639902 | Near ultrasonic pattern comparison intrusion detector | Robert A. Leverance | 1987-01-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5349355 | Credential tracking system | Robert A. Leverance | 1994-09-20 |
| 4639902 | Near ultrasonic pattern comparison intrusion detector | Robert A. Leverance | 1987-01-27 |