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Sistema per la misurazione e l in dicazione della distanza e o della variazione di distanza fra un vei colo a motore e un ostacolo nonche dispositivo per attuare detto si stema
Sistema di controllo dell'auto-allineamento per l'uso in un apparato per riprodurre un videosegnale registrato in successive piste parallele su un mezzo di registrazione
Dispositif d'etancheite pour joints de dilatation entre des dalles,notamment des dalles en beton constituant des chaussees de routes ou d'autoroutes