JH

John E. Hartmann

📍 Frankfort, IL: #11 of 20 inventorsTop 60%
🗺 Illinois: #1,486 of 5,836 inventorsTop 30%
Overall (2002): #188,166 of 266,432Top 75%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6488790 Method of making a high-strength low-alloy hot rolled steel R. Devesh K. Misra, A. John Boucek 2002-12-03