Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5933778 | Method and apparatus for providing telecommunication services based on a subscriber profile updated by a personal information manager | Michael Buhrmann | 1999-08-03 |
| 5903845 | Personal information manager for updating a telecommunication subscriber profile | Michael Buhrmann | 1999-05-11 |
| 5854984 | Radio telephone with detachable pager | Michael Buhrmann | 1998-12-29 |