RC

Ronald R. Chapman

📍 Tucson, AZ: #2,413 of 6,004 inventorsTop 45%
🗺 Arizona: #13,050 of 32,909 inventorsTop 40%
Overall (All Time): #2,364,595 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4418948 Elastic coupling for pipes and tubes Hyok S. Lew 1983-12-06
4322056 Positive closure disc valve Hyok S. Lew 1982-03-30