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Priority to JP1986161717UpriorityCriticalpatent/JPH0325851Y2/ja
Priority to US07/210,518prioritypatent/US4852428A/en
Priority to PCT/JP1987/000809prioritypatent/WO1990008010A1/ja
Publication of JPS6367004UpublicationCriticalpatent/JPS6367004U/ja
Application grantedgrantedCritical
Publication of JPH0325851Y2publicationCriticalpatent/JPH0325851Y2/ja