US1528352A
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Manufacture of silicon-carbide refractories
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Coal-retort lining
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Treating of coal and manufacture of briquettes
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Treating of coal and manufacture of briquettes
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DE379831C
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Method of producing dense and solid coke
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DE392796C
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Process for the production of solid briquettes from lignites
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Carbonizing furnace retort
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GB140821A
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Improvements in and relating to the manufacture of carbonized fuel briquets
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GB142443A
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Improvements in and relating to the carbonising of lignites
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Furnace retort
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Furnace retort
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Furnace-retort
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Furnace-retort
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Furnace-retort
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Furnace-retort
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Furnace retort
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Fuel-briquet.
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Furnace-retort
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Carbonizing furnace retort
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Method of manufacturing briquets
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