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Fluidized coal carbonization
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Patent number 4,213,826
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Issue date Jul 22, 1980
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Cogas Development Company
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Ralph T. Eddinger
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Densification of coal fly ash
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Patent number 4,043,831
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Issue date Aug 23, 1977
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Cogas Development Co.
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Louis D. Friedman
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Waste water processing
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Patent number 3,966,633
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Issue date Jun 29, 1976
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Cogas Development Company
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Louis D. Friedman
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C01 - INORGANIC CHEMISTRY