DIFF Subgroup
B01D 33/80 Accessories
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Filters with filtering elements which move during the filtering operation > Accessories
CPC:
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) > Accessories
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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