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Priority to JP1989043512UpriorityCriticalpatent/JPH0723037Y2/ja
Publication of JPH02136485UpublicationCriticalpatent/JPH02136485U/ja
Priority to US07/639,396prioritypatent/US5216313A/en
Application grantedgrantedCritical
Publication of JPH0723037Y2publicationCriticalpatent/JPH0723037Y2/ja
