Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6118861 | Calling party invoked held call monitoring | Douglas Brian Gutzmann, Fred J. McConnell | 2000-09-12 |
DM
DUNCAN MCLAREN
Overall (All Time): #3,627,414 of 4,157,543Top 90%
1
Patents All Time