Improvements in or relating to the extraction of metal values from ores
DE603476C
Separation of metals or metalloids forming water-soluble double fluorides from their compounds, in particular oxide or silicate ores containing foreign metals
US1905313A
Beryllium-aluminum alloy
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Alloy of aluminum and beryllium
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Beryllium aluminum alloy
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Copper alloy
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Improvements in or relating to piston packing rings
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Improvements in or relating to the electrolytic manufacture of beryllium