Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5185781 | Automation of telephone operator assistance calls | Douglas C. Dowden, Richard W. Hemmeter, William K. McCormick, Robert Petrelli, Richard J. Piereth +3 more | 1993-02-09 |
| 5181237 | Automation of telephone operator assistance calls | Douglas C. Dowden, Richard W. Hemmeter, William K. McCormick, Robert Petrelli, Richard J. Piereth +3 more | 1993-01-19 |
| 5163083 | Automation of telephone operator assistance calls | Douglas C. Dowden, Richard W. Hemmeter, Richard J. Piereth, Samuel M. Salchenberger, Chander S. Sehgal +1 more | 1992-11-10 |
| 4544804 | Conference control transfer arrangement | Laddie E. Suk, David F. Winchell | 1985-10-01 |
| 4540850 | Method and apparatus for controlling a conference | Laddie E. Suk, David F. Winchell | 1985-09-10 |
| 4509167 | Data conference arrangement | Richard G. Bantel | 1985-04-02 |
| 4479195 | Data conference system | Reinhard Metz, Larry Arnise Russell | 1984-10-23 |
| 4475189 | Automatic interactive conference arrangement | Reinhard Metz, Laddie E. Suk, Paul Wiley, David F. Winchell | 1984-10-02 |