- Electronic circuits (7)
- Attenuators (1)
- Recording and playback apparatus, including phonograph (1)
- Recording heads, speech and musical equipment (1)
- Oscillators (1)
- Power supplies, all types: static (1)
- Electronic crystals (1)
- Electronic switches (1)
- Antennas, receiving (3)
- Antennas, satellite: household use (1)
