Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5592539 | System for completing air-to-ground telephone calls | Brenda B. Amarant, Erik N. Breden, Thomas A. Dunn, Stephen M. Kocan, Ilane L. Mathews +2 more | 1997-01-07 |
| 5226075 | Method of and apparatus for numbering and routing calls through a communication network | Sue A. Lawson, David Frederick McGuigan | 1993-07-06 |
| 5185785 | Method and apparatus for recording and rating telecommunication transactions made over a communication network | Sue A. Lawson, David Frederick McGuigan | 1993-02-09 |