DIFF Subgroup
G01V 3/04 using DC
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation > operating with propagation of electric current > using DC
CPC:
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation > operating with propagation of electric current > using DC
No child classifications to compare. This is a leaf node in both IPC and CPC.