Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6714645 | Telephone line interface circuit without hookswitch relay | Frank Sacca | 2004-03-30 |
| 6690776 | Communication on hold notifier | — | 2004-02-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6714645 | Telephone line interface circuit without hookswitch relay | Frank Sacca | 2004-03-30 |
| 6690776 | Communication on hold notifier | — | 2004-02-10 |