Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6088362 | Key telephone system without common control | Robert Turnbull, David Westergaard, Michael J. Lucas, Alan D. Eyre, Brian McKinney | 2000-07-11 |
| 6072826 | Key telephone system without common control | Robert Turnbull, David Westergaard, Michael J. Lucas, Alan D. Eyre, Brian McKinney | 2000-06-06 |
| 6046995 | Key telephone system without common control | Robert Turnbull, David Westergaard, Michael J. Lucas, Alan D. Eyre, Brian McKinney | 2000-04-04 |
| 5946384 | On hold call waiting display method and apparatus | Leonard George Bleile | 1999-08-31 |
| 5787115 | Key telephone system without common control | Robert Turnbull, David Westergaard, Michael J. Lucas, Alan D. Eyre, Brian McKinney | 1998-07-28 |
| 4834415 | Dual-seat foldable baby cart | — | 1989-05-30 |