Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5940025 | Noise cancellation method and apparatus | Mark A. Koehnke, W. Roger Melick, Stephen Rego, Steve Santangelo | 1999-08-17 |
RP
Raoul E. Plutchak
Overall (All Time): #3,657,546 of 4,157,543Top 90%
1
Patents All Time