DB

Donald U. Brumfield

📍 San Jose, CA: #14,517 of 32,062 inventorsTop 50%
🗺 California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,582,296 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7389603 Modular sign post — 2008-06-24
6574957 Tidal/wave compressed air electricity generation — 2003-06-10
6443172 Beach umbrella with self-supporting stand — 2002-09-03