CPC Subgroup
B01D 33/27 with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
Full Title
Filters with filtering elements which move during the filtering operation (filters comprising loose filtering material moving or fluidised during filtration B01D24/28 - B01D24/36; centrifuges B04B) > with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
1 direct subcode
Child Classifications
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