| 6148071 |
Method and apparatus for providing calling features independent of the numbering plan |
Walter Paul Zahray |
2000-11-14 |
| 5894595 |
Personal mobile communication system |
Mark Jeffrey Foladare, Shelley B. Goldman, Susanne Watson Moroses, Nancy Murray, David Phillip Silverman +1 more |
1999-04-13 |
| 5771282 |
Method for billing multiple services on a single account |
— |
1998-06-23 |
| 5675607 |
Method and apparatus for facilitating the making of card calls |
Thomas Alesio, Monowar Hossain, Dooyong Lee |
1997-10-07 |
| 5633922 |
Process and apparatus for restarting call routing in a telephone network |
Katherine G. August |
1997-05-27 |
| 5521966 |
Method and system for mediating transactions that use portable smart cards |
Carlos A. Perea, Yao-Chung Tsao |
1996-05-28 |
| 5450479 |
Method and apparatus for facilitating the making of card calls |
Thomas Alesio, Monowar Hossain, Dooyong Lee |
1995-09-12 |
| 5444774 |
Interactive queuing sytem for call centers |
— |
1995-08-22 |
| 5329581 |
Target area calling system |
Barbara I. Gaechter, Paramdeep S. Sahni, Susan M. Zoccolillo |
1994-07-12 |
| 5311583 |
International priority calling system with callback features |
Diane R. Leighton, Paramdeep S. Sahni, Walter Paul Zahray |
1994-05-10 |
| 5311572 |
Cooperative databases call processing system |
Om Prakash Mahajan |
1994-05-10 |
| 5282243 |
Recording of automatic number identification to identify lost customers |
Hassan Dabbaghi, Robert Finberg, Lisa C. Giulianelli, Angela R. Gore, Nadine K. Grasty +4 more |
1994-01-25 |
| 5003584 |
Method and apparatus for the billing of value-added communication calls |
Irving Benyacar, Elizabeth V. Courte, Thomas P. Howe, David D. Kaufman, James R. Magura +4 more |
1991-03-26 |
| 4555594 |
Telephone interexchange signaling protocol |
Thomas V. Greene, Frederick W. Idenden, Kenneth L. Moeller, Robert M. Musen, John F. O'Hara |
1985-11-26 |