DIFF Subgroup
E03B 3/14 by means of horizontal or oblique wells
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 > by means of horizontal or oblique wells
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) > by means of horizontal or oblique wells
No child classifications to compare. This is a leaf node in both IPC and CPC.