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Priority to JP1985088662UpriorityCriticalpatent/JPH0427269Y2/ja
Priority to US06/871,836prioritypatent/US4752963A/en
Publication of JPS61206400UpublicationCriticalpatent/JPS61206400U/ja
Application grantedgrantedCritical
Publication of JPH0427269Y2publicationCriticalpatent/JPH0427269Y2/ja
