DIFF Subgroup
B01D 29/88 having feed or discharge devices
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups; Filtering elements therefor > having feed or discharge devices
CPC:
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor > having feed or discharge devices
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- B01D 29/94 for discharging the filter cake, e.g. chutes since 1990 +1 CPC IPC+CPC Available in IPC and CPC