Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311880 | Key telephone hold arrangement | Gerry C. Balzer, Alan M. Gordon, Karl Wittig | 1982-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311880 | Key telephone hold arrangement | Gerry C. Balzer, Alan M. Gordon, Karl Wittig | 1982-01-19 |