Pumps having pertinent characteristics not provided for in, or of interest apart from, groups [CPC: F04B25/00] - [CPC: F04B35/00] for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
Pumps having pertinent characteristics not provided for in, or of interest apart from, groups [CPC: F04B25/00] - [CPC: F04B35/00] for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps