Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6046995 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Alan D. Eyre, Brian McKinney | 2000-04-04 |
| 5921600 | Dual handled shovel | — | 1999-07-13 |
| 5787115 | Key telephone system without common control | Robert Turnbull, David Westergaard, Bruce W. Yee, Alan D. Eyre, Brian McKinney | 1998-07-28 |