underwater communications equipment, namely, portable digital transmitters, receivers and transceivers for transmitting and receiving digitized messages ultrasonically, and high speed digital modems for underwater ultrasonic transmission and receipt of voice, data and images
Electrical and Scientific Apparatuscomputerized on-line retail services, wholesale distributorships, mail order catalogue services, and retail stores featuring underwater communications equipment, namely, portable digital devices for transmitting and receiving digitized messages ultrasonically, and high speed digital modems for underwater ultrasonic transmission and receipt of voice, data and images
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