Inventor

PARRA JORGE O

US2 patents

Patents

2 patents

US4835474AMay 30, 1989

Method and apparatus for detecting subsurface anomalies

SOUTHWEST RES INST59 citations92

US5080190AJan 14, 1992

Reversible rigid coupling apparatus and method for borehole seismic transducers

SOUTHWEST RES INST27 citations89