DIFF Subgroup
F04B 37/14 to obtain high vacuum
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
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
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
Navigate with arrow keys, Enter to open