4. Railway switches and signals
  5. Block-signal systems
  6. Automatic

Anthony G. Ehrlich

Inventor

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Broken rail detecting track circuits

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent

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Phase selective track circuit apparatus

Railway switches and signals – Block-signal systems – Automatic
Patent

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Railway cab signal

Railway switches and signals – Block-signal systems – Automatic
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Railway cab signal transmitter

Railway switches and signals – Block-signal systems – Automatic
Patent

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Single-element coded alternating current railway track circuit h

Railway switches and signals – Block-signal systems – Automatic
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Profile ID: LFUS-PAI-P-211910

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