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PCE
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DIFF Subgroup
F04B 37/16

Means for nullifying unswept space

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Pumps specially adapted for elastic fluids and having pertinent characteristics not provided for in, or of interest apart from, groups > for special use > to obtain high vacuum > Means for nullifying unswept space

CPC:

Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 > for special use (for evacuating by absorption or adsorption F04B37/02; for evacuating by thermal means F04B37/06) > to obtain high vacuum > Means for nullifying unswept space

No child classifications to compare. This is a leaf node in both IPC and CPC.