Alf H. Grennard

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6101 Nieder-Ramstadt, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for safe underground storage of materials and apparatus for...
- Patent number 4,224,800
- Issue date Sep 30, 1980
- Alf H. Grennard
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Underground storage for cold and hot products and methods for const...
- Patent number 4,121,429
- Issue date Oct 24, 1978
- Alf H. Grennard
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS