Patent classifications
C
CHEMISTRY; METALLURGY
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C22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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C22B
PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
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26/00
Obtaining alkali, alkaline earth metals or magnesium
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C22B26/20
Obtaining alkaline earth metals or magnesium
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