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Priority to JP20407283UpriorityCriticalpatent/JPS60111749U/ja
Priority to US06/687,272prioritypatent/US4674352A/en
Publication of JPS60111749UpublicationCriticalpatent/JPS60111749U/ja
Priority to US06/938,322prioritypatent/US4768394A/en
Priority to US06/938,323prioritypatent/US4742727A/en
Application grantedgrantedCritical
Publication of JPH0224350Y2publicationCriticalpatent/JPH0224350Y2/ja