Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6965764 | Method and apparatus for generating billing data in a telecommunication system | Christopher Plush, Shelaine Green, David Roat, Brian M. Carr | 2005-11-15 |
| 6173171 | Method and apparatus for generating billing data in a telecommunication system | Christopher Plush, Shelaine Green, David Roat, Brian M. Carr | 2001-01-09 |
| 4525601 | Telephone call accounting system | Richard G. Barnich, Charles K. McGregor | 1985-06-25 |