DT

David A. Tofte

📍 Milwaukie, OR: #150 of 244 inventorsTop 65%
🗺 Oregon: #17,068 of 28,073 inventorsTop 65%
Overall (All Time): #3,952,604 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4747142 Three-track sterophonic system — 1988-05-24