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Carbonaceous material
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Patent number 4,045,187
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Issue date Aug 30, 1977
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South African Coal, Oil and Gas Corporation Limited
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Andries Brink
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Solvent-refining of coal
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Patent number 4,036,730
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Issue date Jul 19, 1977
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South African Coal, Oil & Gas Corporation Limited
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Andries Brink
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Particulate material supply detectors
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Patent number 3,975,605
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Issue date Aug 17, 1976
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South African Coal, Oil & Gas Corporation Limited
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Stephanus Jacobus Daniel van Eeden
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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