- Acceleration indicators and systems components, aerospace (1)
- Bank and turn indicators and components (1)
- Rate-of-climb instrumentation (1)
- Aircraft control instruments (1)
- Navigational systems and instruments (3)
- Control receivers (1)
- Radar systems and equipment (2)
- Sonar systems and equipment (3)
- Defense systems and equipment (1)
- Warfare counter-measure equipment (1)
- Search and detection systems and instruments (2)
- Detection apparatus: electronic/magnetic field, light/heat (3)
