US1912585A
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Method of concentrating dilute aqueous solutions
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US1819517A
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Heating system for liquids
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US1744318A
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Oil-heating system
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US1857816A
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Distillation apparatus and the like
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US1660756A
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Method of concentrating aqueous solutions of fatty acids
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US1805775A
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Method of making esters of the fatty acids
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US1817993A
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Method of concentrating aqueous solutions of volatile substances
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US1731073A
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Method of cooling worts during fermentation
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Denaturing machine
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Method of making alcohol
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Liquid mixer
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US1492718A
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Method of concentrating aqueous solutions of volatile substances
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US1496345A
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Apparatus for mixing liquids
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US1492717A
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Method of concentrating aqueous solutions of volatile substances
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Process of manufacturing alcohol-ether mixtures
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Process of manufacturing alcohol-ether mixtures
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Absorption apparatus
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CA193402A
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Lifting tongs
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US1104912A
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Method of extracting rosin from resinous wood.
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CA248626A
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Method of concentrating aqueous solutions of volatile substances
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