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Process for determining the state of a keyed cw signal in a...

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Program stop control of train vehicles

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Protective device for railroad signaling apparatus

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Proving safe operation system for automatic train

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Proving safe operation system for automatic train

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Pulse code system for railroad track circuits

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Radio based railway signaling and control system

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Rail car tracking system

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Rail communications system

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Rail contact circuit controller

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Rail contact for danger signals on railways

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Rail navigation system

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Rail switch locking and operating device; device for...

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Rail system having wheel-engaged hydraulic...

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Rail vehicle communication

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Rail vision system

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Rail-guided transport system

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Railcar location using mutter networks and locomotive...

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Railcar maintenance management method

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Railcar maintenance management system

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