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Priority to JP1988131285UpriorityCriticalpatent/JPH0512886Y2/ja
Priority to US07/414,497prioritypatent/US4951178A/en
Publication of JPH0252204UpublicationCriticalpatent/JPH0252204U/ja
Application grantedgrantedCritical
Publication of JPH0512886Y2publicationCriticalpatent/JPH0512886Y2/ja
