Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6714535 | Method and system for unlimited use of telephony services over a data network without incurring long distance calling tolls | — | 2004-03-30 |
| 5539801 | Removable telephone line protection module for an electronic device | Adolfo J. Hidalgo, Patrick D. Hill, Paul B. Ripy, Sheldon Steinman, Richard Velez +1 more | 1996-07-23 |
| 5268928 | Data modem with remote firmware update | Lungshan She, Adolfo J. Hidalgo | 1993-12-07 |