DR

Donald F. Ruffner

📍 Scottsdale, AZ: #30 of 163 inventorsTop 20%
🗺 Arizona: #375 of 1,597 inventorsTop 25%
Overall (1997): #157,649 of 185,788Top 85%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5689071 Wide range, high accuracy flow meter Paul D. Olivier 1997-11-18