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Priority to IT97MI001486ApriorityCriticalpatent/IT1292406B1/it
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Priority to TW88217326Uprioritypatent/TW400832U/zh
Publication of ITMI971486A1publicationCriticalpatent/ITMI971486A1/it
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Publication of IT1292406B1publicationCriticalpatent/IT1292406B1/it