Issued Patents All Time
Showing 126–138 of 138 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115604 | Method and apparatus for connecting wireless transmissions to analog phone lines | Leland Lester, David C. Iglehart, William J. Beyda | 2000-09-05 |
| 6091812 | Apparatus and method for automatically switching a headset between a telephone and a second audio source | David C. Iglehart, Leland Lester, Luc Truong, William E. Levene | 2000-07-18 |
| 6058167 | Apparatus and method to provide a functional and more user-friendly interface for downloaded | David C. Iglehart, Leland Lester, O. J. Vander Meiden, Kevin M. Raper, James Umstetter | 2000-05-02 |
| 6047006 | Method and apparatus for dynamically allocating bandwidth to independent data and audio devices | William A. Brakefield, Vedat M. Bilgutay, Bruce E. Burnett, James Umstetter | 2000-04-04 |
| 6002763 | Telephone with a mute ringer function having an automatic ringer reactivation capability | Leland Lester, David C. Iglehart, James Umstetter | 1999-12-14 |
| 5987121 | Allowing stand-alone and local control of a single LED | Tave P. Dunn | 1999-11-16 |
| 5903626 | Diagnostic device for troubleshooting remote digital feature phones | David C. Iglehart, Leland Lester, Andrzej Koscinski, Graham Howard, William J. Beyda | 1999-05-11 |
| 5581608 | Method and apparatus for masking the reporting of network telephony events to a computer | Tave P. Dunn, Michael Horowitz, Peter E. Gersing, Robert D. Whittington, Werner Huber | 1996-12-03 |
| 5495528 | Digital telephone control interface system | Tave P. Dunn, Jack Collins, Michael Horowitz | 1996-02-27 |
| 5485511 | Method and apparatus for determining the telephony features assigned to a telephone | David C. Iglehart, Robert D. Whittington, Andrzej Koscinski, Leland Lester | 1996-01-16 |
| 5359648 | Escape sequence using monitoring of control signal states | Tave P. Dunn, Richard Marc Ludwin, William E. Levene | 1994-10-25 |
| 5345495 | Data diagnostics with leds on the face of a telephone | David Christopher Black, Tave P. Dunn, Gary R. Key, William E. Levene, Timothy L. Wilson | 1994-09-06 |
| 4847893 | Method for monitoring telephone status changes | Mieu-Hong Dang, Nigel James, Jorge R. Taborga | 1989-07-11 |