U.S. federal trademark · Serial No. 72166277 · Reg. No. 0761965
SYNCHRONIZED OBLIQUE IONOSPHERE SOUNDING DEVICES FOR OPTIMUM COMMUNICATIONS FREQUENCY THAT SAMPLE POINT-TO-POINT COMMUNICATIONS CONDITIONS ON 50 FREQUENCIES EACH SECOND AND PRESENT AN UP-TO-THE- MINUTE DISPLAY OF ALL FACTORS NEEDED TO SELECT OPTIMUM WORKING FREQUENCY
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