RR

Ronald Ratner

📍 Rockville, MD: #1,158 of 2,038 inventorsTop 60%
🗺 Maryland: #19,431 of 35,612 inventorsTop 55%
Overall (All Time): #3,926,198 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4824237 Vision and hand/eye coordination exercising and testing machine Harvey Ratner, Glenn A. Seifert, Stephen Selwyn, Marvin Zaro 1989-04-25