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US2314621A
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Process of refining oils of edible type
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Method of preparing absorbent low in salts and free from acid
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Method of filtering oils through paper
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Process for safely distilling and decolorizing mineral oils
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Process of purifying used crank case oil
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Process of distilling and purifying fatty materials
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Process of making a decolorizing clay
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Process of decolorizing oils with acid-activated earth and water
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Process of separating crystalline wax, amorphous wax, and lubricating oil from wax slop
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Process for the manufacture of adsorbent clay
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Process of decolorizing oils by filtration through paper
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Treatment of lubricating oils with an activated clay and water
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Method of restoring moisture and adding acid to reactivated clay
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Process of treating crude oil of the pennsylvania type
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Process of treating crude oil having tar and asphalt content
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Process for preparing activated adsorptive clay
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Process of producing edible oils from crude cottonseed oil
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Activated clay and method of producing same
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Decolorizing material and method of producing same
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US1818452A
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Process of purifying vegetable oil
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