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Priority to JP1987164326UpriorityCriticalpatent/JPH0168634U/ja
Priority to US07/246,640prioritypatent/US4872364A/en
Priority to DE3832426Aprioritypatent/DE3832426A1/de
Priority to KR2019880017286Uprioritypatent/KR910007069Y1/ko
Publication of JPH0168634UpublicationCriticalpatent/JPH0168634U/ja
