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Priority to JP13711484UpriorityCriticalpatent/JPH0319031Y2/ja
Priority to KR2019840012242Uprioritypatent/KR910000246Y1/ko
Priority to US06/753,987prioritypatent/US4640628A/en
Publication of JPS6151593UpublicationCriticalpatent/JPS6151593U/ja
Application grantedgrantedCritical
Publication of JPH0319031Y2publicationCriticalpatent/JPH0319031Y2/ja