RC

Ronald R. Chapman

📍 Tucson, AZ: #20 of 86 inventorsTop 25%
🗺 Arizona: #110 of 528 inventorsTop 25%
Overall (1982): #35,384 of 81,411Top 45%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4322056 Positive closure disc valve Hyok S. Lew 1982-03-30