HS

Harold J. Seppala

3M: 2 patents #84 of 952Top 9%
📍 Windom, MN: #20 of 214 inventorsTop 10%
🗺 Minnesota: #240 of 2,841 inventorsTop 9%
Overall (1994): #32,624 of 165,921Top 20%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5352513 Oil, water and sweat repellent microporous membrane materials James S. Mrozinski 1994-10-04
5325892 Unidirectional fluid valve Daniel A. Japuntich, Vaughn B. Grannis, Anthony B. Ferguson 1994-07-05