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Marktredwitz, DE

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Patents Grantslast 30 patents

Information Patent Grant
Molten metal immersion pouring spout
- Patent number 4,640,447
- Issue date Feb 3, 1987
- Didier-Werke AG
- Heinrich Geller
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Refractory article suitable for casting molten metal
- Patent number 4,634,685
- Issue date Jan 6, 1987
- Didier-Werke AG
- Siegfried Pohl
- B22 - CASTING POWDER METALLURGY