CPC Main Group
F04B 37/00 Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
3 direct subcodes
Child Classifications
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- F04B 37/02 for evacuating by absorption or adsorption
- F04B 37/06 for evacuating by thermal means
- F04B 37/10 for special use (for evacuating by absorption or adsorption F04B37/02; for evacuating by thermal means F04B37/06)