Territorial marking system for locating fault point on underground conduit, such as cable or pipe, comprises electromagnetic markers placed at marking points which can be roughly located using geographical coordinates in a local system
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A marker system with markers of the electromagnetical type, and a marker and a detector therefor
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Procedure and equipment for renovating clock beets
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Marketing system, example for traffic plants
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Markets and application thereof, and detector to seek the market
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Procedure and equipment to check the location of railway bodies
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Procedure and equipment for renovating clock beets
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Procedure and equipment for design of clock pipes
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Markets and application thereof, and detector to seek the market
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Electromagnetic resonance type markets
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Procedure and apparatus for control of working machines for repositioning of bodies
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Procedure and equipment for whole or unique description of clock beets