RK

Ralph O. Keen

📍 Roseville, MI: #2 of 5 inventorsTop 40%
🗺 Michigan: #416 of 1,972 inventorsTop 25%
Overall (1982): #37,672 of 81,411Top 50%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4349955 Method of locking a male member to a female member — 1982-09-21