Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9420080 | Method and apparatus for providing privacy for telephone conversations | Bing Chen, John D. Francis, Laurie Frances Garrison, David Nemec | 2016-08-16 |
| 9178478 | Method and apparatus for providing privacy for telephone conversations | Bing Chen, John D. Francis, Laurie Frances Garrison, David Nemec | 2015-11-03 |
| 7738643 | Method for troubleshooting echo on teleconference bridge | Laurie Frances Garrison, Bing Chen, John D. Francis, David Nemec | 2010-06-15 |
| 6256116 | Method and apparatus for blocking facsimile | — | 2001-07-03 |