Electric and electronic apparatus, instruments and equipment for navigation, guidance, remote control, automatic piloting and stabilization of air, land, sea and space vehicles, namely, Electronic navigational and positioning devices, Hemispherical Resonator Gyroscopes (HRG); hybrid and inertial navigation apparatus, instruments and equipment for land, sea, aeronautical and space vehicles; apparatus, instruments and equipment for radio communication, telemetry, remote control, radio-altimeter...