Heiko Spengemann

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Langenselbold, DE

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Patents Grantslast 30 patents

Information Patent Grant
Electroslag remelting plant including an ingot mold and a hood
- Patent number 4,993,690
- Issue date Feb 19, 1991
- Leybold Aktiengesellschaft
- Otto Stenzel
- B22 - CASTING POWDER METALLURGY