DIFF Subgroup
F04F 1/02 using both positively and negatively pressurised fluid medium, e.g. alternating
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped > using both positively and negatively pressurised fluid medium, e.g. alternating
CPC:
Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (using only negative pressure F04F3/00; jet pumps F04F5/00; siphons F04F10/00) > using both positively and negatively pressurised fluid medium, e.g. alternating
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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