Heavy lubricating oils and their manufacturing process
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Improved process for the manufacture of heavy lubricating oils and products producedthereby
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Improvements in the manufacture of hydrocarbons
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Stabilizing gum forming petroleum product
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Improvements relating to the production of lubricating oils, kerosene and other improved hydrocarbons from petroleum stocks by treatment with aluminium chloride
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Improvements relating to the manufacture of gum-inhibited motor fuels
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Treating lubricating oils
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Sealing liquid and process of making same
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Dewaxing lubricating oils
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Manufacture of ethyl chloride from petroleum refinery gas
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Improvements to the engine fuel fabrication process
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Improved process of making motor fuel by cracking oils