Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536621 | Dual talk path key telephone | Henry Bergen, Vincenzo Castellano, Irwin Schildkraut | 1985-08-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536621 | Dual talk path key telephone | Henry Bergen, Vincenzo Castellano, Irwin Schildkraut | 1985-08-20 |