IPC Definitions - January 01, 2012

E21B 47/26 - Definition fr

Informative references

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

Recording in connection with measuring in general

G01D

Information storage in general

G11

Recording seismic data

G01V 1/24

Recording data of measuring magnetic field characteristic of the earth

G01V 3/36