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Priority to JP8956770ApriorityCriticalpatent/JPS4823666B1/ja
Priority to DE19712148408prioritypatent/DE2148408C3/de
Priority to GB4537871Aprioritypatent/GB1336657A/en
Priority to BE773457Aprioritypatent/BE773457A/xx
Priority to IT2951171Aprioritypatent/IT938947B/it
Publication of JPS4823666B1publicationCriticalpatent/JPS4823666B1/ja