Antennas; Downloadable computer software for map analysis and map generation; Loran navigation machines and apparatus; Radio-frequency receivers; Electronic transmitters and receivers for broadcasting low -frequency signals; Liquid crystal display (LCD) monitors
Electrical and Scientific ApparatusEngineering design services; Engineering services in the field of positioning, navigation, and timing, systems; Testing, analysis, and evaluation of positioning, navigation and timing systems to assure compliance with industry standards
Computer and Scientific