Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6369795 | Mousepad telephone | Leland Lester, Larry W. Coons, Michael G. Duncan | 2002-04-09 |
| 6125180 | Durable telephone with no moving parts | Leland Lester, Larry W. Coons, Michael G. Duncan | 2000-09-26 |
| 6115464 | Method and system for distinguishing valid DTMF signals from spurious DTMF noise | Leland Lester, Daniel B. Kelly, Tave P. Dunn | 2000-09-05 |
| 6115604 | Method and apparatus for connecting wireless transmissions to analog phone lines | Leland Lester, Elie Antoun Jreij, William J. Beyda | 2000-09-05 |
| 6091812 | Apparatus and method for automatically switching a headset between a telephone and a second audio source | Leland Lester, Elie Antoun Jreij, Luc Truong, William E. Levene | 2000-07-18 |
| 6061446 | Mousepad telephone | Leland Lester, Larry W. Coons, Michael G. Duncan | 2000-05-09 |
| 6058167 | Apparatus and method to provide a functional and more user-friendly interface for downloaded | Leland Lester, Elie Antoun Jreij, O. J. Vander Meiden, Kevin M. Raper, James Umstetter | 2000-05-02 |
| 6002763 | Telephone with a mute ringer function having an automatic ringer reactivation capability | Leland Lester, Elie Antoun Jreij, James Umstetter | 1999-12-14 |
| 5903626 | Diagnostic device for troubleshooting remote digital feature phones | Leland Lester, Elie Antoun Jreij, Andrzej Koscinski, Graham Howard, William J. Beyda | 1999-05-11 |
| 5857019 | Apparatus and method for providing a telephone user with control of the threshold volume at which the user's voice will take control of a half-duplex speakerphone conversation | Leland Lester, Joel Adams, Geof Findley | 1999-01-05 |
| 5815562 | Apparatus and method for providing a user with one telephone number that rings phones on heterogeneous systems worldwide | Leland Lester, Roger Bjork, Vedat M. Bilgutay, Andrzej Koscinski, Lee G. Rosenbaum | 1998-09-29 |
| 5485511 | Method and apparatus for determining the telephony features assigned to a telephone | Robert D. Whittington, Elie Antoun Jreij, Andrzej Koscinski, Leland Lester | 1996-01-16 |
| 5452347 | Dual-line telephone bridging device that gives remote telephones access to communications features | Gordon D. Ford, Leland Lester | 1995-09-19 |