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Priority to JP1979112054UpriorityCriticalpatent/JPS605898Y2/ja
Priority to US06/177,460prioritypatent/US4373461A/en
Priority to DE19803030880prioritypatent/DE3030880A1/de
Publication of JPS5630882UpublicationCriticalpatent/JPS5630882U/ja
Application grantedgrantedCritical
Publication of JPS605898Y2publicationCriticalpatent/JPS605898Y2/ja