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 JP11400687UpriorityCriticalpatent/JPS6419067U/ja
Priority to KR1019880006843Aprioritypatent/KR890002538A/ko
Priority to US07/223,504prioritypatent/US4903673A/en
Priority to DE3825553Aprioritypatent/DE3825553A1/de
Publication of JPS6419067UpublicationCriticalpatent/JPS6419067U/ja
Priority to KR2019930011644Uprioritypatent/KR940002900Y1/ko
