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Priority to JP1986162535UpriorityCriticalpatent/JPH0519540Y2/ja
Priority to KR1019870011763Aprioritypatent/KR910004382B1/ko
Priority to US07/111,612prioritypatent/US4815419A/en
Publication of JPS6367612UpublicationCriticalpatent/JPS6367612U/ja
Application grantedgrantedCritical
Publication of JPH0519540Y2publicationCriticalpatent/JPH0519540Y2/ja