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Priority to JP1990059194UpriorityCriticalpatent/JPH0723212Y2/ja
Priority to US07/695,701prioritypatent/US5149091A/en
Publication of JPH0417914UpublicationCriticalpatent/JPH0417914U/ja
Application grantedgrantedCritical
Publication of JPH0723212Y2publicationCriticalpatent/JPH0723212Y2/ja