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Priority to JP13429288UpriorityCriticalpatent/JPH0632411Y2/ja
Priority to US07/406,969prioritypatent/US4922171A/en
Priority to KR1019890013367Aprioritypatent/KR940004967B1/ko
Publication of JPH02121313UpublicationCriticalpatent/JPH02121313U/ja
Application grantedgrantedCritical
Publication of JPH0632411Y2publicationCriticalpatent/JPH0632411Y2/ja