LC

Lawrence H. Conrad

3M: 3 patents #4,214 of 11,543Top 40%
📍 Maplewood, MN: #214 of 510 inventorsTop 45%
🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%
Overall (All Time): #1,683,683 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4406522 Variable magnification lens — 1983-09-27
4350415 Auxiliary lens system for overhead projectors — 1982-09-21
4310223 6 Mm Ultra-fiche lens — 1982-01-12