Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577718 | Method for call forwarding without hairpinning and with split billing | Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Mishra, Kadangode K. Ramakrishnan | 2003-06-10 |
| 6574335 | Method for simulating a ring back for a call between parties in different communication networks | Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Mishra, Kadangode K. Ramakrishnan | 2003-06-03 |