HE

Helmut Erhard

HA Heidelberger Zement Ag: 1 patents #1 of 5Top 20%
📍 Mason City, IA: #1 of 3 inventorsTop 35%
🗺 Iowa: #149 of 653 inventorsTop 25%
Overall (1997): #143,824 of 185,788Top 80%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5667582 Method for dry desulfurizing flue gases Jochen Ziegler 1997-09-16