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Karl-Heinz Bietz
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Friedberg, DE
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last 30 patents
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Patent Grant
Process of drying and heating oil-containing solids
Patent number
4,659,456
Issue date
Apr 21, 1987
Metallgesellschaft AG
Roland Rammler
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...