4. Electricity: measuring and testing
  5. Fault detecting in electric circuits and of electric components
  6. For fault location

Jeff Fries

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Digital train system for automatically detecting trains...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Railway vehicle
Reexamination Certificate

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Method and system for calculating railroad track ballast...

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3098628

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