IPC Definitions - January 01, 2012

E21B 47/047 - Definition fr

Definition statement

This group covers:

Processes or apparatus for detecting or finding the top of a fluid or fluent non-gaseous substance in the borehole.

Informative references

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

Measuring temperature in general

G01K

Measuring pressure in general

G01L