DIFF Subgroup
F04B 19/12 of helical or screw-type
Introduced: September 1968
Title
Titles differ between systems:
IPC: of helical or screw type
CPC: of helical or screw-type
Full Title
Full titles differ between systems:
IPC:
Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups > Scoop devices > of helical or screw type
CPC:
Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00 > Scoop devices > of helical or screw-type
No child classifications to compare. This is a leaf node in both IPC and CPC.