Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36228 | Call progress capability for a switched channel data service unit | Daniel M. Joffe | 1999-06-15 |
| 5060259 | Call progress capability for a switched channel data service unit | Daniel M. Joffe | 1991-10-22 |
| 5014307 | Method and apparatus for echo canceler disablement | Daniel M. Joffe | 1991-05-07 |
| 4995076 | Call progress capability for a switched channel data service unit | Daniel M. Joffe | 1991-02-19 |