Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7822184 | Call hold signaling | Frederick Murray Burg, Mark Jeffrey Foladare | 2010-10-26 |
| 7526077 | Call hold signaling | Frederick Murray Burg, Mark Jeffrey Foladare | 2009-04-28 |
| 7248683 | Call hold signaling | Frederick Murray Burg, Mark Jeffrey Foladare | 2007-07-24 |
| 6925161 | Call hold signaling | Frederick Murray Burg, Mark Jeffrey Foladare | 2005-08-02 |
| 5333180 | Call message delivery system and method utilizing caller-selected system announcements | Percy B. Brown, Nga V. Chau, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more | 1994-07-26 |
| 4972461 | Call message delivery system and method | Percy B. Brown, Nga V. Chau, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more | 1990-11-20 |
| 4939771 | Attendant-controlled call message delivery system and method | Percy B. Brown, Nga V. Chau, A. R. Gore, Georg K. Karawas, Richard E. LeCronier +4 more | 1990-07-03 |