IPC Definitions - January 01, 2012
E21B 47/007 - Definition
This group covers:
Processes or apparatus for finding strains in tubular borehole conduits.
References relevant to classification in this group
This group does not cover:
Locating blocked portions of pipes | E21B 47/09 |
Attention is drawn to the following places, which may be of interest for search:
Measuring stress in general | G01L |