CPC Subgroup
C01B 13/08 from air with the aid of metal oxides, e.g. barium oxide, manganese oxide
Full Title
Oxygen; Ozone; Oxides or hydroxides in general > Preparation of oxygen (by liquefying F25J) > from air with the aid of metal oxides, e.g. barium oxide, manganese oxide
2 direct subcodes
Child Classifications
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