KH

Karl H. Hellman

UE US EPA: 1 patents #1 of 14Top 8%
📍 Ann Arbor, MI: #97 of 327 inventorsTop 30%
🗺 Michigan: #1,023 of 4,492 inventorsTop 25%
Overall (1997): #123,367 of 185,788Top 70%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5609131 Multi-stage combustion engine Charles L. Gray, Jr. 1997-03-11