Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6330325 | Automatic log-off signaling for telephone systems | Dwight D. Lynn | 2001-12-11 |
| 5926543 | Headset amplifier with automatic log on/log off detection | Dwight D. Lynn, Shu-Ren Chen | 1999-07-20 |
| RE35536 | Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching | Pierre Irissou, Shu-Ren Chen, Dwight D. Lynn | 1997-06-17 |
| 5488657 | Apparatus for and method of operating an automatic log on/log off circuit in a telephone system by disconnecting a headset | Dwight D. Lynn, Shu-Ren Chen | 1996-01-30 |
| 5353347 | Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching | Pierre Irissou, Shu-Ren Chen, Dwight D. Lynn | 1994-10-04 |
| 5226077 | Headset amplifier with automatic log on/log off detection | Dwight D. Lynn, Shu-Ren Chen | 1993-07-06 |