Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6584317 | Concurrent ringing on multiple network telephones | Louis Michael Taff, Richard Zaffino | 2003-06-24 |
| 6539223 | Mobile telecommunications device having multiple directory number capability | Ramakrishna Bijanki, Perminder Dhawan, Bijan Farhang, Patrick Li, John MacNamara +2 more | 2003-03-25 |
| 6405041 | Concurrent ringing on multiple network telephones | Louis Michael Taff, Richard Zaffino | 2002-06-11 |
| 6169891 | Method and apparatus for billing of wireless telephone calls | Peter C. Gorham, Michael McCarthy, James A. Tavares | 2001-01-02 |
| 5513242 | Method and apparatus for facilitating the ultimate making of wireless data transfers | RALPH J. SNYDER | 1996-04-30 |
| 5513247 | Method and apparatus for facilitating the making of wireless telephone calls | Ralph Utano | 1996-04-30 |
| 5479484 | Method and apparatus for facilitating the making of wireless telephone calls | Ralph Utano | 1995-12-26 |