Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5802153 | Apparatus and method for interfacing between a communications channel and a processor for data transmission and reception | Manickam R. Sridhar, Minh Hoang, John Wortman | 1998-09-01 | $5,639,000 |
| 5787116 | Apparatus and method for detecting amplitude modulated answer back toned signals | Thanh Lam, Richard Haltmaier | 1998-07-28 | $15,566,000 |
| 5483593 | Call progress decoder for multiple cadenced tones on telephone lines | Sanjay Gupta | 1996-01-09 | $8,511,000 |