DIFF Subgroup
F17B 1/18 bell-shaped
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Gas-holders of variable capacity > of wet type > bell-shaped
CPC:
Gas-holders of variable capacity (large containers in general B65D88/00; storing fluids in natural or artificial cavities or chambers in the earth B65G5/00) > of wet type > bell-shaped
No child classifications to compare. This is a leaf node in both IPC and CPC.