- Aircraft/aerospace flight instruments and guidance systems (2)
- Acceleration indicators and systems components, aerospace (1)
- Aircraft flight instruments (1)
- Artificial horizon instrumentation (1)
- Aircraft control systems, electronic (2)
- Automatic pilots, aircraft (1)
- Navigational systems and instruments (2)
- Radar systems and equipment (2)
- Sonar systems and equipment (1)
- Nautical instruments (1)
- Sextants (1)
- Defense systems and equipment (5)
- Air traffic control systems and equipment, electronic (2)
- Light or heat emission operating apparatus (1)
