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Priority to JP1987137749UpriorityCriticalpatent/JPH0627329Y2/ja
Priority to US07/241,673prioritypatent/US4856490A/en
Priority to DE8888114693Tprioritypatent/DE3861655D1/de
Publication of JPS6442823UpublicationCriticalpatent/JPS6442823U/ja
Application grantedgrantedCritical
Publication of JPH0627329Y2publicationCriticalpatent/JPH0627329Y2/ja