HT

Helwig Teubner

WA Wolff Walsrode Ag: 1 patents #100 of 163Top 65%
Overall (All Time): #4,035,299 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4451649 Process for the production of hydroxypropyl starch Wilhelm Oppermann 1984-05-29