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Priority to JP1995968ApriorityCriticalpatent/JPS4739050B1/ja
Priority to US808792Aprioritypatent/US3538419A/en
Priority to GB1264538Dprioritypatent/GB1264538A/en
Priority to DE19691914875prioritypatent/DE1914875A1/de
Publication of JPS4739050B1publicationCriticalpatent/JPS4739050B1/ja