Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6359980 | Method for administering advanced number portability numbers | Robert Petrelli, Cecil Bernard Cates, James Patrick Dunn, Ronald Martin, John Peterson +1 more | 2002-03-19 |
| 5500889 | Method and apparatus for prioritizing a telephone call according to a level of service of an originator | Mark Baker, William Hagerman, Nancy Stevens | 1996-03-19 |
| 5486847 | Apparatus for a stylus input system for shielding RFI/EMI fields | Karl-Heinz Ranf | 1996-01-23 |