Jacques R. P. Schoennahl

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Libos, Fumel, FR

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Patents Grantslast 30 patents

Information Patent Grant
Gas-permeable refractory parts
- Patent number 4,236,931
- Issue date Dec 2, 1980
- Societe Europeenne des Produits Refractaires
- Jean-Pierre Kiehl
- B22 - CASTING POWDER METALLURGY