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Heinz Donnerstag

Overall (1989): #33,167 of 140,708Top 25%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4795146 Training device for cross-country skiers and ice skaters Hans-Ueli Kreuzer 1989-01-03