DB

Dennis Barnum

PU Portland State University: 1 patents #19 of 51Top 40%
📍 Portland, OR: #4,612 of 9,213 inventorsTop 55%
🗺 Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #2,248,248 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5891508 Mask for disguising or counteracting odors — 1999-04-06
5636628 Mask for disguising or counteracting odors — 1997-06-10