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GB376949A
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Improvements in or relating to the lighting of gas burners
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GB349509A
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Improvements in or relating to the lighting of gas burners
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US1380278A
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Grate for gas-producers and carbonizing plants
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US1367445A
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Gas-producer for mechanical traction
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US1390183A
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Gas-cleaning apparatus
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GB139731A
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Improvements in furnace grates more particularly for use with gas producers or carbonising plants
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US1373280A
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Tar-extractor and scrubber for gas
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