VM

Virgil A. Marple

UM University of Minnesota: 2 patents #3 of 67Top 5%
📍 Maple Plain, MN: #1 of 3 inventorsTop 35%
🗺 Minnesota: #129 of 2,022 inventorsTop 7%
Overall (1989): #13,573 of 140,708Top 10%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4827779 Cartridge personal sampling impactor Benjamin Y. H. Liu 1989-05-09
4796475 Personal air sampling impactor — 1989-01-10