Jean-Francois Trefouel

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Details Jean-Francois Trefouel Jean-Francois Trefouel

: Geometrical instruments
: Indicator of direction of force traversing natural media
: Railway rail spacing and inclination

: Inventor
: active

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Railroad vehicle for measuring the geometrical parameters of rai

Geometrical instruments – Indicator of direction of force traversing natural media – Railway rail spacing and inclination

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Profile ID: LFUS-PAI-P-1515628

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