GB499913A
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Improvements in and relating to gas producers for use with internal combustion engines and regulating means therefor
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GB446377A
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Improved furnace
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US2113831A
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Combustion apparatus
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GB375250A
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A new or improved process for the distillation of solid fuels
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GB289425A
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Apparatus for the distillation of solid matters
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GB213586A
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Apparatus for the distillation of solid or liquid matters
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GB213560A
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An improved process for the manufacture of compressed or artificial fuel and fuel manufactured by such process
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GB198661A
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Apparatus for the distillation of solid or liquid substances
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US1551814A
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Apparatus for the distillation of solid or liquid substances
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GB192418A
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Perforated smokeless fuel briquette and process of manufacture thereof
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