U.S. federal trademark · Serial No. 73090138 · Reg. No. 1080239
ELECTRONIC ACOUSTIC NAVIGATION SYSTEMS-NAMELY, TRANSPONDERS, INTERROGATOR TRANSDUCERS, INTERROGATOR/RECEIVERS, PROCESSORS, PLOTTERS AND KEYBOARD/PRINTERS FOR USE IN DEEP WATER SURVEYS, RIG MOVES, PIPE LAYING, AND NAVIGATION OF SUBMERSIBLES
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