JY

John H. Youngren

📍 Robbinsdale, MN: #53 of 105 inventorsTop 55%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,940,447 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4875760 Reflective prism assembly David J. Youngren 1989-10-24