Apparatus for orienting a magnetometer

Apparatus for producing artificial reverberations

Apparatus for producing geophysical measurements in a borehole

Apparatus for providing in phase polarization in a proton...

Apparatus for removal of condensation from a marine gas...

Apparatus for sensing vehicles

Apparatus for surveying bore holes

Apparatus for surveying of boreholes

Apparatus for switching geophones

Apparatus for the detection ofbubbles in a liquid metal and...

Apparatus for the generation of acoustic signals in marine...

Apparatus for the measurement of gravitational fields

Apparatus for the measurement of gravitational gradients

Apparatus for the remote detection of conducting bodies

Apparatus for timing the firing of energy sources

Apparatus for use in investigating earth formations

Apparatus with capacitive electrodes for measuring...

Apparent dip angle calculation and image compression based...

Apparent dip angle calculation and image compression based...

Application of radio frequency identification