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Door
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Patent number 5,279,713
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Issue date Jan 18, 1994
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Ruhrkohle Aktiengesellschaft
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Klaus Wessiepe
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Door
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Patent number 5,150,543
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Issue date Sep 29, 1992
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Ruhrkohle AG
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Klaus Wessiepe
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Door
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Patent number 5,076,019
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Issue date Dec 31, 1991
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Ruhrkohle AG
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Klaus Wessiepe
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Coking reactor
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Patent number 4,990,220
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Issue date Feb 5, 1991
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Bergwerksverband GmbH
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Gerd Nashan
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Door
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Patent number 4,986,032
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Issue date Jan 22, 1991
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Ruhrkohle AG
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Klaus Wessiepe
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...