CPC Subgroup
C01C 1/04 Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025)
Full Title
Ammonia; Compounds thereof > Preparation, or separation of ammonia > Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025)
2 direct subcodes
Child Classifications
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