Airborne instruments, namely, balloon-borne instrument packages comprised of wireless network repeaters for receiving from and transmitting data to ground-based transmitters and receivers; and ground-based telecommunications equipment for receiving and transmitting data, namely, pagers and telecommunication instant messaging devices, telecommunications wireless network data repeaters, data transmitters and data receivers
Electrical and Scientific ApparatusVoice, messaging and data telecommunications services, namely, electronic transmission of voice, messages and data via electronic communications networks
Telecommunications