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U.S. Patent Application Ser. No. 07/968,100 "A Method of Aircraft Tracking System". |
U.S. Patent Application Ser. No. 07/767,007 "Method of Bearing System ". |
U.S. Patent Application Ser. No. 07/976,150 "A Method of Improved Initial Transmission of Acquisition and Tracking Interrogations in an Aircraft Tracking System". |