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CA185802A
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Filter
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US1226103A
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Apparatus for separating unfilterable material from a mixture of filterable and unfilterable matter.
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US1259032A
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Filter.
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CA157685A
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Method of recovering metals from solutions
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CA156458A
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Filter press
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US1063570A
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Precipitant for recovering metals from solutions.
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US1063569A
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Process of precipitation of material from cyanid solutions.
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US1063568A
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Process of precipitation of material from cyanid solutions.
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CA135148A
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Metal recovering process
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CA180200A
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Method of treatig solids and semi-solids
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US1063567A
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Process of precipitating and recovering materials from solutions.
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US1093345A
|
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Filter-press.
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US987904A
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Container for pressure-filters.
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US1006866A
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Process for precipitating hydrometallurgical solutions by means of an improved precipitant.
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US1226104A
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Process for treating semisolid material in the containers of filter-presses and removing the same therefrom.
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US1006865A
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Process for precipitating hydrometallurgical solutions by means of an improved precipitant.
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US1094916A
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Trolley catcher and retriever.
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CA121048A
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Pressure filter
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CA121049A
|
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Pressure filter
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CA118895A
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Process of precipitating and recovering valuable materials from solutions
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