HS

Helmut Siewert

TA Thyssen Industrie Ag: 1 patents #39 of 145Top 30%
📍 Castrop-Rauxel, DE: #64 of 134 inventorsTop 50%
Overall (All Time): #4,072,871 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4339937 Ring rolling mill Alfred Strugala, Erich Dittrich 1982-07-20