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

H. James Wilson

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Hall effect track circuit receiving element

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

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Impedance bond

Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent

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Means for use on a railroad to distinguish between traction curr

Communications: electrical – Selective – Having indication or alarm
Patent

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Signal control system

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

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Profile ID: LFUS-PAI-P-301710

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