DQ

Dean R. Quam

📍 Minneapolis, MN: #2,566 of 6,114 inventorsTop 45%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,318,022 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5035336 Compact collapsible manhole cover lifter Robert J. Schmitz 1991-07-30
4789072 Hydraulic manhole cover lifter Robert J. Schmitz 1988-12-06