CPC Subgroup Additional Only
B01D 2201/18 Filters characterised by the openings or pores
Full Title
Details relating to filtering apparatus > Filters characterised by the openings or pores
3 direct subcodes
Child Classifications
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- B01D 2201/182 for depth filtration
- B01D 2201/184 Special form, dimension of the openings, pores of the filtering elements
- B01D 2201/188 Multiple filtering elements having filtering areas of different size