HH

Helmut Hulsmann

MA Metallgesellschaft Ag: 1 patents #308 of 715Top 45%
Overall (All Time): #3,649,709 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5904786 Method of applying phosphate coatings to metal surfaces Thomas Wendel, Hardy Wietzoreck, Klaus Bittner, Peter Schiefer, Marcus Schinzel 1999-05-18