IPC Definitions - January 01, 2012

E21B 47/002 - Definition fr

Definition statement

This group covers:

Processes or apparatus using images obtained by electrical, optical, acoustical or other methods, e.g. using a camera for observation.

Informative references

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

Photographing internal surfaces, e.g. of pipes

G03B 37/00

Closed circuit television systems

H04N 7/18