4. Telecommunications
  5. Carrier wave repeater or relay system
  6. Monitoring

Tunnel Radio of America, Inc.

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Antenna system for two-way UHF underground radio system

Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate

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Radio communication system for use in tunnels

Telecommunications – Carrier wave repeater or relay system – Monitoring
Patent

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Profile ID: LFUS-PAI-P-952579

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