Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Priority to JP8704987UpriorityCriticalpatent/JPS63195212U/ja
Priority to KR2019880007370Uprioritypatent/KR910004117Y1/ko
Priority to US07/201,856prioritypatent/US4888551A/en
Publication of JPS63195212UpublicationCriticalpatent/JPS63195212U/ja
Priority to US07/371,559prioritypatent/US4931728A/en
