Method of employing elemental zinc for the purification of aqueous solutions of metallic salts von SPASSOV, KOSTADIN STANKOV, MILKOV, ANGEL DIMITROV, BUYUKLIEV, GEORGI STOYKOV, KOLAROV, MILADIN IVANOV, ILIEV, ILIYA MARINOV, KUNCHEV, NIKOLA TZANOV

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ELECTRIC SYSTEM FOR ELECTRIC EXTRACTION OF NON-FERROUS METALS FROM THEIR SOLUTIONS von HARALAMPIEV, GEORGI ALEXANDROV, ENCHEV, IVAN DIMITROV, HARIZANOV, KIRIL GEORGIEV, ALEXANDROV, ALEXANDER MINCHEV, DRAGANOV, NEDELCHO DRAGANOV, SMILENOV, TODOR IVANOV, ILEL, ELIESER PERSIADO, STOYANOV, YOSSIF GENCHEV, GENEVSKI, VLADIMIR VETOV, KUNCHEV, NIKOLA TZANOV

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Method for electric extraction of non-ferrous metals from their solutions von HARALAMPIEV, GEORGI ALEXANDROV, ENCHEV, IVAN DIMITROV, HARIZANOV, KIRIL GEORGIEV, ALEXANDROV, ALEXANDER MINCHEV, ILEL, ELIESSER PERSIADO, DRAGANOV, NEDELCHO DRAGANOV, SMILENOV, TODOR IVANOV, STOYANOV, YOSSIF GENCHEV, GENEVSKI, VLADIMIR VETOV, KUNCHEV, NIKOLA TZANOV

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METHOD AND DEVICE FOR ELECTRIC EXTRACTION OF NON-FERROUS METALS FROM THEIR SOLUTIONS von TODOR IVANOV SMILENOV, ALEXANDER MINCHEV ALEXANDROV, VLADIMIR VETOV GENEVSKI, ELIESER PERSIADO IIEL, NIKOLA TZANOV KUNCHEV, NEDELCHO DRAGANOV DRAGANOV, KIRIL GEORGIEV HARIZANOV, YOSSIF GENCHEV STOYNOV, IVAN DIMITROV ENCHEV, GEORGI ALEXANDROV HARALAMPIEV

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METHOD AND ELEKTRIC SYSTEM FOR ELECTRIC EXTRACTION ON NON- FERROUS METALS FROM THEIR SOLUTIONS von TODOR IVANOV SMILENOV, YOSSIF GENCHEV STOYANOV, ELIESER PERSIADO ILEL, ALEXANDER MINCHEV ALEXANDROV, VLADIMIR VETOV GENEVSKI, NIKOLA TZANOV KUNCHEV, NEDELCHO DRAGANOV DRAGANOV, KIRIL GEORGIEV HARIZANOV, GEORGI ALEXANVROV HARALAMPIEV, IVAN DIMITROV ENCHEV

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Fremgangsmåde til elektroraffinering af bly von ANGEL DIMITROV MILKOV, NIKOLA TZANOV KUNTSHEV, DIMITAR ANDREEV PETROV, GUEORGUI ALEXANDROV HARALAMPIEV, BISSER YANATSHKOV SOTIROV, IVAN DIMITROV ENTSHEV

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