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PL413199A1
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Linear blocking system for mainline siding
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PL376196A1
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Method and sleeve for protecting screwed joints against loosening
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PL375682A1
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Automatic level crossing signalling remote control system
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PL374065A1
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Track side mounted electronic circuitry of rail-vehicle wheel sensor
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PL371816A1
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Control system for operating mechanisms, particularly for barrier drives
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PL371648A1
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Outer distant signal control system in automatic signalling devices at level crossings
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PL371459A1
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Control system and continuous inspection system of road traffic signals in level crossing automatic signalling devices
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PL371275A1
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System for safe control of external objects, particularly level crossing automatic signalling devices
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PL370006A1
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Control system for single-point automatic train braking devices
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PL354209A1
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Transmitter system for underground railway train automatic speed limiter
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PL354208A1
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Receiver system for underground railway train automatic speed limiter
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