4. Railway switches and signals
  5. Roadway-defect protection
  6. Electric

Thomas T. Shen

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Method and apparatus for detecting railway activity

Railway switches and signals – Roadway-defect protection – Electric
Patent

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Wireless communication base station

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
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Wireless railroad grade crossing warning system

Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
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Profile ID: LFUS-PAI-P-877450

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