US2332215A
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Distillation apparatus
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Distillation process
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US2012125A
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Water soluble resinate production
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US1997171A
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Production of pure by-products from resin-containing liquors
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US1810472A
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Process of recovering resinous by-products in the manufacture of wood pulp
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US1916104A
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Method of purifying resins and product produced thereby
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|
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Process for producing water-soluble resinates
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|
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Process of recovering resinous by-products in the manufacture of wood pulp
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Process of fractionally distilling mixtures containing hydrocarbons
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|
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Process of producing pyroligneous acid.
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CA132131A
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Method of and apparatus for producing pyroligneous acid
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Process of producing acetic acid.
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CA368193A
|
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Resinous material processing
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CA403446A
|
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Distillation apparatus
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CA235080A
|
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Means of evaporating and distilling liquids
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CA380743A
|
|
Resinous material processing
|
CA403445A
|
|
Distillation process
|