Efficient generation of traveltime tables for complex velocity m

Efficient generation of traveltime tables for two dimensional an

Efficient inversion of near singular geophysical signals

Efficient low cost transducer system

Efficient method for storing seismic traces on disk

Efficient seismic data acquisition with source separation

Elastic impedance estimation for inversion of far offset seismic

Elastic pulse generator having a desired predetermined wave form

Elastic wave device for sensing a touch-position

Elastomer structure for transducers

Electric signal transfer element

Electric test set for acoustic torpedo homing systems

Electrical cable marker

Electrical circuits for timing signals

Electrical component mounting apparatus with isolated conductors

Electrical conductor detecting device

Electrical firing circuit

Electrical interconnect for multilayer transducer elements of a

Electrical measuring while drilling with composite electrodes

Electrical signal discrimination