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Method of finishing normally impervious plastics and articles produced thereby
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Method of preparation for and performance of in situ retorting
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Vertical flow process for in situ retorting of oil shale
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Mist removal
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Fractionation of mixtures of aromatic compounds utilizing gamma lactum solvents
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Fractionation of mixtures of aromatic hydrocarbons
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Separation of aromatic hydrocarbons from non-aromatic hydrocarbons utilizing a lactam-water solvent
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Separation of hydrocarbon mixtures to recover aromatic hydrocarbons utilizing lactone-water solvents
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Cutting oil
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Means for operating oil wells
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Safety sign
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Pumping power
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Pumping power
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Stuffing box
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Fractionation of mixtures of aromatic hydrocarbons
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