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Priority to JP14937987UpriorityCriticalpatent/JPH0439640Y2/ja
Priority to US07/250,338prioritypatent/US4879536A/en
Priority to EP88116135Aprioritypatent/EP0310091B1/en
Priority to DE3888070Tprioritypatent/DE3888070T2/de
Publication of JPS6455640UpublicationCriticalpatent/JPS6455640U/ja
Application grantedgrantedCritical
Publication of JPH0439640Y2publicationCriticalpatent/JPH0439640Y2/ja