Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6940959 | Remote broadcast of call announce and call screening information | Brian Buckler, Jim Paarsmarkt, Jerry Freestone | 2005-09-06 |
| 6088362 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Michael J. Lucas, Brian McKinney | 2000-07-11 |
| 6072826 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Michael J. Lucas, Brian McKinney | 2000-06-06 |
| 6046995 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Michael J. Lucas, Brian McKinney | 2000-04-04 |
| 5966432 | Remote answering of doorbell | Brian Buckler, David Westergaard, Zygmunt Pasturczyk | 1999-10-12 |
| 5787115 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Michael J. Lucas, Brian McKinney | 1998-07-28 |