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Railway vehicle location system
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Railway signalling system
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Track circuit signalling arrangement
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Remote power generation
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GB8415077D0
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Vehicle braking
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Remote lighting arrangements
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Opto-isolator arrangement
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Railway track circuit termination
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ZA8107880B
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Line signal fault detection system
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Line signal fault detection system
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Track circuit
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AU6888181A
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Broken power rail detection
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Data communication apparatus
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Railway signalling apparatus
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Vehicle supervisory systems and apparatus therefor
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Improvements in or relating to electro-mechanical resonant devices
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GB1326885A
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