Helmut Hahn

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Hanau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of dry distillation of volatile substances from mineral matt...
- Patent number 4,563,264
- Issue date Jan 7, 1986
- Metallgesellschaft Aktiengesellschaft
- Hans J. Weiss
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...