Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6608820 | Method and apparatus for controlling a conference call | — | 2003-08-19 |
| 6236854 | Method and apparatus for controlling a conference call | — | 2001-05-22 |
| 5089969 | Shaft synchronous balancing apparatus | Bill Tack, Mike Hansford, John Winterbottom | 1992-02-18 |