26 GEOPHYSICAL INSTRUMENTS-NAMELY, MARINE AND AIRBORNE MAGNETOMETERS AND GAMMA RAY RADIATION DETECTORS AND APPARATUS WHICH RECORD DATA FROM SAID INSTRUMENTS
Trademark Events
Aug 15, 1994
Expired Sec. 9
Oct 4, 1979
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.