Patent classifications
G
PHYSICS
Load children
G01
MEASURING; TESTING
Load children
G01V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
Load children
3/00
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
Load children Filter patents View analytics View as hierarchy
G01V3/18
specially adapted for well-logging
Load children Filter patents View analytics View as hierarchy
G01V3/26
operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
Load children Filter patents View analytics View as hierarchy
G01V3/265
Operating with fields produced by spontaneous potentials, e.g. electrochemicals or produced by telluric currents
Filter patents View analytics View as hierarchy