Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7263174 | Predicting performance of telephone lines for data services | David J. Groessl, Yun Zhang | 2007-08-28 |
| 6895081 | Predicting performance of telephone lines for data services | David J. Groessl, Yun Zhang | 2005-05-17 |
| 6741676 | Determining the physical structure of subscriber lines | Ilia Lazar Rudinsky | 2004-05-25 |
| 6590962 | Method of performing non-interactive resistive fault location | David J. Groessl, Yun Zhang | 2003-07-08 |
| 6389109 | Fault conditions affecting high speed data services | Roger Faulkner | 2002-05-14 |
| 6385297 | Method and apparatus for qualifying loops for data services | Roger Faulkner, Yun Zhang | 2002-05-07 |
| 6026145 | Method and apparatus for fault segmentation in a telephone network | Frank Bauer, David J. Groessl | 2000-02-15 |
| 6004276 | Open architecture cardiology information system | Gregory John Wright, Philip Scott Hochberg, Darcy B. Bellusci, Eric Brinster, Mark Willard Brinton +15 more | 1999-12-21 |
| 5870451 | Method and apparatus for high impedance ringer detection | Richard G. Winkler, David J. Groessl | 1999-02-09 |
| 5699402 | Method and apparatus for fault segmentation in a telephone network | Frank Bauer, Joseph S. Rosen, David J. Groessl | 1997-12-16 |
| 5644617 | Method and apparatus for testing cables | — | 1997-07-01 |