Digital locating system and device for underground object...

Digital locating system and device for underground object...

Digital locating system and device for underground object...

Digital nulling pulse inductive metal detector

Dipole field locate point determination using a horizontal...

Discriminating metal detector with compensation for ground miner

Discriminating time domain conducting metal detector utilizing m

Discrimination of metallic targets in magnetically...

Distinguishing false signals in cable locating

Distinguishing false signals in cable locating using a...

Dual field metal detector

Dual field search coil for pulse induction metal detectors

Dynamic magnetic locator and method for the same

Electromagnetic borehole surveying method

Electromagnetic detector apparatus and method for oil or gas...

Electromagnetic gradiometer having a primary detector and a...

Electromagnetic induction spectroscopy for identifying hidden ob

Electromagnetic pipe mapper for accurate location and depth dete

Electromagnetic shield for an inductive search coil assembly

Electromagnetic survey system with multiple sources