Donald D. Frey

📍 Hillsboro, OR: #59 of 169 inventorsTop 35%

🗺 Oregon: #694 of 2,269 inventorsTop 35%

Overall (2003): #235,103 of 273,478Top 90%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6530396	Valve coupler for delivering air into a propane tank	—	2003-03-11