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Priority to JP1984188899UpriorityCriticalpatent/JPH051994Y2/ja
Priority to US06/742,482prioritypatent/US4644239A/en
Publication of JPS61104793UpublicationCriticalpatent/JPS61104793U/ja
Application grantedgrantedCritical
Publication of JPH051994Y2publicationCriticalpatent/JPH051994Y2/ja
