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Process of and apparatus for the fractional extraction of petroleum hydrocarbons with alcohol
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Apparatus for fractionally extracting petroleum hydrocarbons with alcohol
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Process of fractionally extracting petroleum hydrocarbons with alcohol
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Process of and apparatus for the fractional extraction of petroleum hydrocarbons with alcohol
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Method of disposing of spent clay in refining plants
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Process for separating alcohols from oil
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Apparatus for the fractional extraction of petroleum hydrocarbons with alcohol
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Improvements relating to the treatment of petroleum oils
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Process of and apparatus for refining petroleum
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Art of purifying petroleum.
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Cleansing purifying agent employed in purifying petroleum.
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Art of purifying petroleum
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Apparatus for the fractional extraction of petroleum hydrocarbons with alcohol
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Art of purifying petroleum, and in products therefrom.
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