Joachim Schwerdtfeger

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Barum, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for feeding iron sponge into an electric arc furnace
- Patent number 4,290,800
- Issue date Sep 22, 1981
- Hamburger Stahlwerke GmbH
- Siegfried Sensis
- C21 - METALLURGY OF IRON