DIFF Subgroup
F04D 13/12 Combinations of two or more pumps (combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Combinations of two or more pumps
CPC: Combinations of two or more pumps (combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04)
Full Title
Full titles differ between systems:
IPC:
Pumping installations or systems > Combinations of two or more pumps
CPC:
Pumping installations or systems (controlling F04D15/00) > Combinations of two or more pumps (combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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