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Priority to JP1988014393UpriorityCriticalpatent/JPH0753494Y2/ja
Priority to KR2019880012375Uprioritypatent/KR930003136Y1/ko
Priority to US07/247,433prioritypatent/US4923140A/en
Publication of JPH01125073UpublicationCriticalpatent/JPH01125073U/ja
Application grantedgrantedCritical
Publication of JPH0753494Y2publicationCriticalpatent/JPH0753494Y2/ja
