4. Railway switches and signals
  5. Cab signal or train control
  6. Speed-control systems

Stephen R. Montgomery

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Enhanced distributed power

Railway switches and signals – Cab signal or train control – Speed-control systems
Patent

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Method and apparatus for controlling trains by determining a...

Railway switches and signals – Train-position indication – Miniature model
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1505145

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