Selection of specified materials

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Methods or installations for obtaining or collecting drinking water or tap water > from underground > Obtaining and confining water by means of wells > Component parts of wells > Well filters > of elements of special shape > Selection of specified materials

CPC:

Methods or installations for obtaining or collecting drinking water or tap water (treatment of water C02F) > from underground > Obtaining and confining water by means of wells (applicable to a combination of water and other liquids or to other liquids only E21B43/00) > Component parts of wells > Well filters (filters in general B01D24/00 - B01D35/00) > of elements of special shape > Selection of specified materials

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