Land based unit for seismic data acquisition
Land seismic source method and apparatus
Land seismic source method and apparatus
Laplace gravity gradiometer
Large array of radio frequency id transponders deployed in...
Laser gravitational field fluctuation detector
Latching mechanism
Layer stripping method
Leak detector and method
Leak detector and method
Lifetime pulsed neutron/chlorine combination logging tool
Light barrier
Light barrier and method for the operation of a light barrier
Light beam detector for door operators using fiber optics
Light curtain device
Light pipe containing material
Lightweight, low cost structure for formation conductivity...
Line array transducer assembly
Linear perturbation method for kalman filter tracking of...
Liquid slug projector apparatus