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Priority to JP1989005144UpriorityCriticalpatent/JPH078816Y2/ja
Priority to US07/461,219prioritypatent/US4979306A/en
Publication of JPH02105547UpublicationCriticalpatent/JPH02105547U/ja
Application grantedgrantedCritical
Publication of JPH078816Y2publicationCriticalpatent/JPH078816Y2/ja