Arnold Van Zyl

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Pretoria, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Method of making .beta."-alumina
- Patent number 4,946,664
- Issue date Aug 7, 1990
- Lilliwyte Societe Anonyme
- Arnold Van Zyl
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method of making beta"-alumina
- Patent number 4,732,741
- Issue date Mar 22, 1988
- Lilliwyte Societe Anonyme
- James H. Duncan
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES