Large airborne time-domain electromagnetic transmitter coil...
Line locator with accurate horizontal displacement detection
Locating an inaccessible object by detecting horizontal and vert
Locating arrangement and method using boring tool and cable...
Locating arrangement and method using boring tool and cable...
Locating arrangement and method using boring tool and cable...
Locating arrangement and method using boring tool and cable...
Locating device
Locating stationary magnetic objects
Locating system for finding magnetic objects in the ground inclu
Location of a cable in a dc connection in a bipolar 12-pulse...
Locator device for continuously locating a dipole magnetic field
Locator equipment with self-integrity test capability
Locator of electrically conductive objects
Locator transmitter having an automatically tuned antenna
Logging apparatus for measurement of earth formation resistivity
Logging apparatus having a wall engaging pad with longitudinally
Logging device loaded with dielectric material to minimize spuri
Logging earth formations with electromagnetic energy to determin
Logging method and apparatus for investigating geometrical chara