Inventor

DUFF BOB M

US3 patents

⚠️ This page may combine multiple inventors who share the name “DUFF BOB M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SOUTHWEST RES INST

2 patents

US4835474AMay 30, 1989

Method and apparatus for detecting subsurface anomalies

SOUTHWEST RES INST59 citations92

US4689569AAug 25, 1987

Directional antenna system for use in a borehole incorporating antenna dipole elements

SOUTHWEST RES INST14 citations69

NIPPON COLIN CO LTD

1 patent

US4905706AMar 6, 1990

Method an apparatus for detection of heart disease

NIPPON COLIN CO LTD179 citations94