Device and method for monitoring the state of the sub-structure of fixed tracks
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United States of America Patent
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Dec 26, 2006
Grant Date -
Nov 23, 2006
app pub date -
Oct 1, 2003
filing date -
Oct 4, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Device for monitoring the state of the substructure of fixed tracks, especially in the transition region of substructure supporting plates, measuring bolts, which, in vertical recesses, pass freely through the track plate above, being fastened at the ends of the substructure plates, which are to be monitored.
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