CPC Subgroup
F04F 1/02 using both positively and negatively pressurised fluid medium, e.g. alternating
Full Title
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
1 direct subcode
Child Classifications
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- F04F 1/04 generated by vaporising and condensing