Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8548432 | Authenticating voice calls from mobile devices | Bradford Lawrence Spencer, Manvinder Singh | 2013-10-01 |
| 8301117 | Authenticating voice calls from mobile devices | Bradford Lawrence Spencer, Manvinder Singh | 2012-10-30 |
| 7412035 | External detection of optional telephone services on a telephone line | William P. McMullin | 2008-08-12 |
| 7158615 | External detection of optional telephone services on an unknown telephone line | William P. McMullin | 2007-01-02 |
| 6999577 | Multi-user call waiting | Myles Thomas Wang, Stephen Vaughan Murphy | 2006-02-14 |
| 6950498 | External detection of optional telephone services | William P. McMullin | 2005-09-27 |