DF

Donald D. Frey

📍 Hillsboro, OR: #1,577 of 2,365 inventorsTop 70%
🗺 Oregon: #17,068 of 28,073 inventorsTop 65%
Overall (All Time): #3,504,797 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6530396 Valve coupler for delivering air into a propane tank — 2003-03-11