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Priority to JP1988035162UpriorityCriticalpatent/JPH01140148U/ja
Priority to KR1019890001746Aprioritypatent/KR920006455B1/ko
Priority to DE3905824Aprioritypatent/DE3905824A1/de
Publication of JPH01140148UpublicationCriticalpatent/JPH01140148U/ja
Priority to US07/503,072prioritypatent/US5062294A/en
