Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4430639 | Visual message intercommunication unit and system | Robert J. Grady, James L. Konsevich, Perry H. Vartanian | 1984-02-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4430639 | Visual message intercommunication unit and system | Robert J. Grady, James L. Konsevich, Perry H. Vartanian | 1984-02-07 |