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Priority to JP1988060990UpriorityCriticalpatent/JPH071313Y2/ja
Priority to DE3910894Aprioritypatent/DE3910894C3/de
Publication of JPH01167917UpublicationCriticalpatent/JPH01167917U/ja
Priority to US07/579,350prioritypatent/US5066068A/en
Application grantedgrantedCritical
Publication of JPH071313Y2publicationCriticalpatent/JPH071313Y2/ja