| 8416945 |
Adaptive duplexing for amplified telephone |
David G. Lashley, Billy J. Worley |
2013-04-09 |
| 8311210 |
Isolated high gain line amplifier circuit |
David G. Lashley |
2012-11-13 |
| 7881464 |
Microphone with reduced noise |
Billy J. Worley, David G. Lashley |
2011-02-01 |
| 7298859 |
Microphone with reduced noise |
Billy J. Worley, David G. Lashley |
2007-11-20 |
| 7092513 |
Limiting maximum gain in duplex communications devices including telephone sets |
David G. Lashley, John Pilozzi |
2006-08-15 |
| 7042986 |
DSP-enabled amplified telephone with digital audio processing |
David G. Lashley |
2006-05-09 |
| 7003096 |
Full duplex telephone set using echo cancellation and side tone management for high gain stability |
David G. Lashley |
2006-02-21 |
| 7003085 |
Customer service process for remotely assisting users of telephone and modem systems |
David G. Lashley |
2006-02-21 |
| 6721404 |
Remotely controlled diagnostic telephone system with modem |
David G. Lashley |
2004-04-13 |
| 6462651 |
Gear indicator |
Anthony John Consiglio, Michael Doss, John A. McGirr |
2002-10-08 |
| 6075857 |
Motor cycle helmet headset |
Christopher Francis Smith, David G. Lashley |
2000-06-13 |