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Priority to JP1988150230UpriorityCriticalpatent/JPH0720930Y2/ja
Priority to US07/432,809prioritypatent/US5113108A/en
Publication of JPH0270465UpublicationCriticalpatent/JPH0270465U/ja
Application grantedgrantedCritical
Publication of JPH0720930Y2publicationCriticalpatent/JPH0720930Y2/ja