Inventor

STRECKER JOHN E

US2 patents

Patents

2 patents

US4922472AMay 1, 1990

Apparatus for inducing elliptically polarized shear waves in an earth medium

CONOCO INC6 citations59

US5062061AOct 29, 1991

Automatic direction control for omni-directional shear wave sources

CONOCO INC4 citations54