IPC Definitions - January 01, 2012

E21B 47/092 - Definition fr

Definition statement

This group covers:

Processes or apparatus for determining the whereabouts or position of objects in a borehole or well using magnetic attraction/repulsion force irregularities.

Informative references

Attention is drawn to the following places, which may be of interest for search:

Investigating materials by investigating magnetic variables

G01N 27/72