Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778665 | Distribution of current draw in a line powered DAA | Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Michael S. Toth | 2004-08-17 |
| 6735305 | Detection of low tip/ring currents in a line powered DAA | Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Michael S. Toth, Keith Eugene Hollenbach +1 more | 2004-05-11 |
| 6687371 | Maintaining an off-hook condition during a call bridge | Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Michael S. Toth | 2004-02-03 |