Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4591665 | Method and apparatus for providing call tracing service | Robert W. Foster, Rosanna M. Lottes | 1986-05-27 |
| 4567323 | Method and apparatus for providing a plurality of special services | Rosanna M. Lottes | 1986-01-28 |