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 JP602687UpriorityCriticalpatent/JPS63115721U/ja
Priority to US07/014,322prioritypatent/US4771368A/en
Priority to DE3704574Aprioritypatent/DE3704574C2/de
Publication of JPS63115721UpublicationCriticalpatent/JPS63115721U/ja
Priority to KR2019910019703Uprioritypatent/KR920007925Y1/ko
