- Aircraft/aerospace flight instruments and guidance systems (5)
- Acceleration indicators and systems components, aerospace (1)
- Infrared object detection equipment (1)
- Aircraft control instruments (1)
- Aircraft control systems, electronic (1)
- Radar systems and equipment (1)
- Sonar systems and equipment (3)
- Nautical instruments (1)
- Defense systems and equipment (3)
- Missile guidance systems and equipment (1)
- Search and detection systems and instruments (2)
- Air traffic control systems and equipment, electronic (3)
- Detection apparatus: electronic/magnetic field, light/heat (2)
- Pictorial deviation indicators (1)
