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Priority to JP10857286UpriorityCriticalpatent/JPH0535613Y2/ja
Priority to US07/072,294prioritypatent/US4814724A/en
Priority to KR878711504Uprioritypatent/KR900010409Y1/ko
Publication of JPS6315618UpublicationCriticalpatent/JPS6315618U/ja
Application grantedgrantedCritical
Publication of JPH0535613Y2publicationCriticalpatent/JPH0535613Y2/ja
