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Priority to JP1986137088UpriorityCriticalpatent/JPH0429964Y2/ja
Priority to US07/093,002prioritypatent/US4795293A/en
Publication of JPS6344747UpublicationCriticalpatent/JPS6344747U/ja
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Publication of JPH0429964Y2publicationCriticalpatent/JPH0429964Y2/ja