HH

Helmut Hirschfelder

📍 São Paulo, BR: #656 of 1,773 inventorsTop 40%
Overall (All Time): #4,071,009 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4333836 Cellular drum filter for the dewatering of fiber suspensions Fritz Peroutka 1982-06-08