HS

Helmut Siewert

TA Thyssen Industrie Ag: 1 patents #9 of 21Top 45%
📍 Castrop-Rauxel, DE: #3 of 4 inventorsTop 75%
Overall (1982): #59,340 of 81,411Top 75%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

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