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Priority to JP13820486UpriorityCriticalpatent/JPS6344609U/ja
Priority to KR1019870004194Aprioritypatent/KR900008870B1/ko
Priority to DE19873715105prioritypatent/DE3715105A1/de
Priority to GB8710652Aprioritypatent/GB2191259B/en
Publication of JPS6344609UpublicationCriticalpatent/JPS6344609U/ja