Richard G. Durkee

📍 Santa Ana, CA: #423 of 1,362 inventorsTop 35%

🗺 California: #149,087 of 386,348 inventorsTop 40%

Overall (All Time): #1,681,727 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4450002	Heavy metal removal process	—	1984-05-22
4304599	Heavy metal removal process	—	1981-12-08
4294434	Heavy metal removal apparatus	—	1981-10-13