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US2460379A
|
|
Article handling apparatus
|
|
US2369028A
|
|
Treating of nonferrous materials
|
|
US2369029A
|
|
Smelting of nonferrous materials
|
|
US2371679A
|
|
Material extruding apparatus
|
|
US2344445A
|
|
Material for charging furnaces
|
|
US2355515A
|
|
Method of smelting tin-containing materials
|
|
US2393239A
|
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Refining of nonferrous metals
|
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US2325176A
|
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Refining of nonferrous metal fume
|
|
US2356897A
|
|
Process for electrodeposition of metal
|
|
US2361013A
|
|
Electrolytic refining of copperbearing materials
|
|
US2257437A
|
|
Cast metal articles
|
|
US2403586A
|
|
Refining of nonferrous metals
|
|
US2217847A
|
|
Soldering flux
|
|
US2241543A
|
|
Extrusion apparatus
|
|
US2246955A
|
|
Receptacle
|
|
US2286241A
|
|
Refining of nonferrous metals
|
|
US2286240A
|
|
Refining of nonferrous metals
|
|
US2180139A
|
|
Purification of metals
|
|
US2111575A
|
|
Refining of nonferrous metals
|
|
US2055195A
|
|
Manufacture of purified zinc
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