| 8000460 |
Providing a call waiting distinctive ringback feature in wireless networks |
Frances Chin, Mauro Dal Pan, Lei Wang |
2011-08-16 |
| 7620400 |
Inter-system message delivery for SMS text messages |
Paresh Kanabar, Mark Alan McCormick, John Nguyen |
2009-11-17 |
| 7184746 |
Method and apparatus for providing network support for a wireless emergency call |
Deborah Barclay, Douglas Rollender |
2007-02-27 |
| 6920326 |
Method and apparatus for restricting call terminations when a mobile unit is roaming |
Anjana Agarwal, Michael J. Rudolph |
2005-07-19 |
| 6882839 |
One-way roaming from ANS-41 to GSM systems |
Douglas Rollender, Michael Marcovici |
2005-04-19 |
| 6466796 |
System for providing location based service to a wireless telephone set in a telephone system |
Elizabeth Ann Kidwell, Michael Joseph Meyer, Maria E. Palamara |
2002-10-15 |
| 4800374 |
Personnel antistatic test device |
— |
1989-01-24 |
