HH

Helmut Hirschfelder

📍 São Paulo, BR: #2 of 8 inventorsTop 25%
Overall (1982): #78,033 of 81,411Top 100%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

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