U.S. federal trademark · Serial No. 75476450
Radio range and direction sensing apparatus namely, transmitters and receivers for locating pipes concealed above ground, underground pipes, pipes under water or underground drilling equipment; radio transmitters and receivers for locating a radio transmitting device or a radiosonde concealed above ground, or underground or under water; radio transmitting devices comprising transmitters and receivers or radiosondes for use in any concealed location above ground, or underground or under water; and parts therefore
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