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B01J 2219/304
Composition or microstructure of the elements
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data.epo.org/linked-data/def/cpc/B01J2219-304
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Patent classification
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Child Classification
B01J 2219/30466
B01J 2219/30416
B01J 2219/30408
B01J 2219/30491
B01J 2219/30475
B01J 2219/30483
B01J 2219/30458
B01J 2219/3045
...
Classification Type
Cooperative Patent Classification
Parent Classification
B01J 2219/30
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