- Aircraft/aerospace flight instruments and guidance systems (5)
- Acceleration indicators and systems components, aerospace (5)
- Aircraft flight instruments (3)
- Artificial horizon instrumentation (1)
- Gyro gimbals (1)
- Infrared object detection equipment (1)
- Aircraft control instruments (3)
- Aircraft control systems, electronic (2)
- Automatic pilots, aircraft (1)
- Navigational systems and instruments (3)
- Antennas, radar or communications (1)
- Control receivers (1)
- Radar systems and equipment (4)
- Sonar systems and equipment (1)
- Sextants (2)
- Defense systems and equipment (7)
- Missile guidance systems and equipment (2)
- Search and detection systems and instruments (2)
- Air traffic control systems and equipment, electronic (1)
- Detection apparatus: electronic/magnetic field, light/heat (5)
- Electronic field detection apparatus (aeronautical) (1)
- Magnetic field detection apparatus (1)
- Light or heat emission operating apparatus (1)
