| 9154624 |
Call processing and subscriber registration systems and methods |
David S. Trandal, Robert J. Duva, Robert F. Smith |
2015-10-06 |
| 8750469 |
Methods and systems for call processing |
Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more |
2014-06-10 |
| 8718243 |
Call processing and subscriber registration systems and methods |
David S. Trandal, Robert J. Duva, Robert F. Smith |
2014-05-06 |
| 8494504 |
Methods and systems for telephony processing, including location based call transfers |
Leland W. Kirchhoff, David S. Trandal |
2013-07-23 |
| 8472592 |
Methods and systems for call processing |
Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more |
2013-06-25 |
| 8259911 |
Call processing and subscriber registration systems and methods |
David S. Trandal, Robert J. Duva, Robert F. Smith |
2012-09-04 |
| 8000455 |
Methods and systems for call processing |
Adrian Van Haaften, David Giannini, Eric T. Johnson, David F. Hofstatter, David S. Trandal +2 more |
2011-08-16 |
| 7409048 |
Call processing and subscriber registration systems and methods |
David S. Trandal, Robert J. Duva, Robert F. Smith |
2008-08-05 |