4. Railway switches and signals
  5. Cab signal or train control
  6. Train defect

Frank A. Svet

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Multiplexing means for motion detectors at grade crossings

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Normally open track circuit
Patent

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Technique for the detection of flat wheels on railroad cars by a

Railway switches and signals – Cab signal or train control – Train defect
Patent

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Profile ID: LFUS-PAI-P-1028528

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