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ES184637A1
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A elastic clutch mechanism applicable to the wheels of the mechanical and similar traction vehicles.
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ES168452A1
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An automatic signaling system in the locomotives of the railways
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ES157432A1
|
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System of automatic signals in the locomotive
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ES125715A1
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System of automatic activation of signals and barriers for level crossings.
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ES124423A1
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Electrical device to automatically activate the needles on the tracks of trams.
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ES122763A1
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Block system or automatic locking system for railways.
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US1845132A
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Automatic block system
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ES110393A1
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A system of automatic blocking corrector.
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ES107687A1
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A self-block system of security in the railway operations.
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