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Priority to JP1987141579UpriorityCriticalpatent/JPH0448752Y2/ja
Priority to KR2019880002163Uprioritypatent/KR930007854Y1/ko
Priority to US07/162,709prioritypatent/US4883079A/en
Priority to FR888804291Aprioritypatent/FR2620603B1/fr
Publication of JPS6447320UpublicationCriticalpatent/JPS6447320U/ja
Application grantedgrantedCritical
Publication of JPH0448752Y2publicationCriticalpatent/JPH0448752Y2/ja