DIFF Subgroup
B01D 24/38 Feed or discharge devices
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof > Feed or discharge devices
CPC:
Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof (B01D27/02 takes precedence) > Feed or discharge devices
Of 5 combined children, 3 exist in both systems.
2 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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